PureStoragePowerShellToolkit.psm1

<#
	===========================================================================
    Release version: 2.0.4.0
    Revision information: Refer to the changelog.md file
	---------------------------------------------------------------------------
	Maintained by: 	FlashArray Integrations and Evangelsigm Team @ Pure Storage
	Organization: 	Pure Storage, Inc.
	Filename:     	PureStoragePowerShellToolkit.psm1
	Copyright:		(c) 2022 Pure Storage, Inc.
	Module Name: 	PureStoragePowerShellToolkit
	Description: 	PowerShell Script Module (.psm1)
	--------------------------------------------------------------------------
	Disclaimer:
    The sample module and documentation are provided AS IS and are not supported by the author or the author’s employer, unless otherwise agreed in writing. You bear
	all risk relating to the use or performance of the sample script and documentation. The author and the author’s employer disclaim all express or implied warranties
	(including, without limitation, any warranties of merchantability, title, infringement or fitness for a particular purpose). In no event shall the author, the author’s employer or anyone else involved in the creation, production, or delivery of the scripts be liable 	for any damages whatsoever arising out of the use or performance of the sample script and 	documentation (including, without limitation, damages for loss of business profits, business interruption, loss of business information, or other pecuniary loss), even if 	such person has been advised of the possibility of such damages.
	--------------------------------------------------------------------------
	Contributors: Rob "Barkz" Barker @purestorage, Robert "Q" Quimbey @purestorage, Mike "Chief" Nelson, Julian "Doctor" Cates, Marcel Dussil @purestorage - https://en.pureflash.blog/ , Craig Dayton - https://github.com/cadayton , Jake Daniels - https://github.com/JakeDennis, Richard Raymond - https://github.com/data-sciences-corporation/PureStorage , The dbatools Team - https://dbatools.io , many more Puritans, and all of the Pure Code community who provide excellent advice, feedback, & scripts now and in the future.
    ===========================================================================
#>
#Requires -Version 3

#### BEGIN HELPER FUNCTIONS

#region ConvertTo-Base64
function ConvertTo-Base64() {
<#
    .SYNOPSIS
	Converts source file to Base64.
    .DESCRIPTION
	Helper function
	Supporting function to handle conversions.
    .INPUTS
	Source (Mandatory)
    .OUTPUTS
	Converted source.
#>
    Param (
        [Parameter(Mandatory = $true)][String] $Source
    )
    return [Convert]::ToBase64String((Get-Content $Source -Encoding byte))
}
#endregion

#region Convert-Size
function Convert-Size() {
<#
    .SYNOPSIS
	Converts volume sizes from B to MB, MB, GB, TB.
    .DESCRIPTION
	Helper function
	Supporting function to handle conversions.
    .INPUTS
	ConvertFrom (Mandatory)
	ConvertTo (Mandatory)
	Value (Mandatory)
	Precision (Optional)
    .OUTPUTS
	Converted size of volume.
#>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $true)][ValidateSet("Bytes", "KB", "MB", "GB", "TB")][String]$ConvertFrom,
        [Parameter(Mandatory = $true)][ValidateSet("Bytes", "KB", "MB", "GB", "TB")][String]$ConvertTo,
        [Parameter(Mandatory = $true)][Double]$Value,
        [Parameter(Mandatory = $false)][Int]$Precision = 4
    )
    switch ($ConvertFrom) {
        "Bytes" { $value = $Value }
        "KB" { $value = $Value * 1024 }
        "MB" { $value = $Value * 1024 * 1024 }
        "GB" { $value = $Value * 1024 * 1024 * 1024 }
        "TB" { $value = $Value * 1024 * 1024 * 1024 * 1024 }
    }

    switch ($ConvertTo) {
        "Bytes" { return $value }
        "KB" { $Value = $Value / 1KB }
        "MB" { $Value = $Value / 1MB }
        "GB" { $Value = $Value / 1GB }
        "TB" { $Value = $Value / 1TB }
    }

    return [Math]::Round($Value, $Precision, [MidPointRounding]::AwayFromZero)
}
#endregion

#region New-FlashArrayReportPieChart
function New-FlashArrayReportPieChart() {
<#
    .SYNOPSIS
	Creates graphic pie chart .png image file for use in report.
    .DESCRIPTION
	Helper function
	Supporting function to create a pie chart.
    .OUTPUTS
	piechart.png.
#>
    Param (
        [string]$FileName,
        [float]$SnapshotSpace,
        [float]$VolumeSpace,
        [float]$CapacitySpace
    )

    [void][Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
    [void][Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms.DataVisualization")

    $chart = New-Object System.Windows.Forms.DataVisualization.charting.chart
    $chart.Width = 700
    $chart.Height = 500
    $chart.Left = 10
    $chart.Top = 10

    $chartArea = New-Object System.Windows.Forms.DataVisualization.charting.chartArea
    $chart.chartAreas.Add($chartArea)
    [void]$chart.Series.Add("Data")

    $legend = New-Object system.Windows.Forms.DataVisualization.charting.Legend
    $legend.Name = "Legend"
    $legend.Font = "Verdana"
    $legend.Alignment = "Center"
    $legend.Docking = "top"
    $legend.Bordercolor = "#FE5000"
    $legend.Legendstyle = "row"
    $chart.Legends.Add($legend)

    $datapoint = New-Object System.Windows.Forms.DataVisualization.charting.DataPoint(0, $SnapshotSpace)
    $datapoint.AxisLabel = "SnapShots " + "(" + $SnapshotSpace + " MB)"
    $chart.Series["Data"].Points.Add($datapoint)

    $datapoint = New-Object System.Windows.Forms.DataVisualization.charting.DataPoint(0, $VolumeSpace)
    $datapoint.AxisLabel = "Volumes " + "(" + $VolumeSpace + " GB)"
    $chart.Series["Data"].Points.Add($datapoint)

    $chart.Series["Data"].chartType = [System.Windows.Forms.DataVisualization.charting.SerieschartType]::Doughnut
    $chart.Series["Data"]["DoughnutLabelStyle"] = "Outside"
    $chart.Series["Data"]["DoughnutLineColor"] = "#FE5000"

    $Title = New-Object System.Windows.Forms.DataVisualization.charting.Title
    $chart.Titles.Add($Title)
    $chart.SaveImage($FileName + ".png", "png")
}
#endregion

#region Get-Sdk1Module
function Get-Sdk1Module() {
<#
    .SYNOPSIS
	Confirms that PureStoragePowerShellSDK version 1 module is loaded, present, or missing. If missing, it will download it and import. If internet access is not available, the function will error.
    .DESCRIPTION
	Helper function
	Supporting function to load required module.
    .OUTPUTS
	PureStoragePowerShellSDK version 1 module.
#>
    $m = "PureStoragePowerShellSDK"
    # If module is imported, continue
    if (Get-Module | Where-Object { $_.Name -eq $m }) {
    }
    else {
        # If module is not imported, but available on disk, then import
        if (Get-InstalledModule | Where-Object { $_.Name -eq $m }) {
            Import-Module $m -ErrorAction SilentlyContinue
        }
        else {
            # If module is not imported, not available on disk, then install and import
            if (Find-Module -Name $m | Where-Object { $_.Name -eq $m }) {
                Write-Warning "The $m module does not exist."
                Write-Host "We will attempt to install the module from the PowerShell Gallery. Please wait..."
                Install-Module -Name $m -Force -ErrorAction SilentlyContinue -Scope CurrentUser
                Import-Module $m -ErrorAction SilentlyContinue
            }
            else {
                # If module is not imported, not available on disk, and we cannot access it online, then abort
                Write-Host "Module $m not imported, not available on disk, and we are not able to download it from the online gallery... Exiting."
                EXIT 1
            }
        }
    }
}
#endregion

#region Get-Sdk1Module
function Get-Sdk2Module() {
    <#
    .SYNOPSIS
	Confirms that PureStoragePowerShellSDK version 2 module is loaded, present, or missing. If missing, it will download it and import. If internet access is not available, the function will error.
    .DESCRIPTION
	Helper function
	Supporting function to load required module.
    .OUTPUTS
	PureStoragePowerShellSDK version 2 module.
#>
    $m = "PureStoragePowerShellSDK2"
    # If module is imported, continue
    if (Get-Module | Where-Object { $_.Name -eq $m }) {
    }
    else {
        # If module is not imported, but available on disk, then import
        if (Get-InstalledModule | Where-Object { $_.Name -eq $m }) {
            Import-Module $m -ErrorAction SilentlyContinue
        }
        else {
            # If module is not imported, not available on disk, then install and import
            if (Find-Module -Name $m | Where-Object { $_.Name -eq $m }) {
                Write-Warning "The $m module does not exist."
                Write-Host "We will attempt to install the module from the PowerShell Gallery. Please wait..."
                Install-Module -Name $m -Force -ErrorAction SilentlyContinue -Scope CurrentUser
                Import-Module $m -ErrorAction SilentlyContinue
            }
            else {
                # If module is not imported, not available on disk, and we cannot access it online, then abort
                Write-Host "Module $m not imported, not available on disk, and we are not able to download it from the online gallery... Exiting."
                EXIT 1
            }
        }
    }
}
#endregion

#region Get-DbaToolsModule
function Get-DbaToolsModule() {
    <#
    .SYNOPSIS
	Confirms that dbatools PowerShell module is loaded, present, or missing. If missing, it will download it and import. If internet access is not available, the function will error.
    .DESCRIPTION
	Helper function
	Supporting function to load required module.
    .OUTPUTS
	dbatools module - https://dbatools.io.
#>
    $m = "dbatools"
    # If module is imported, continue
    if (Get-Module | Where-Object { $_.Name -eq $m }) {
    }
    else {
        # If module is not imported, but available on disk, then import
        if (Get-InstalledModule | Where-Object { $_.Name -eq $m }) {
            Import-Module $m -ErrorAction SilentlyContinue
        }
        else {
            # If module is not imported, not available on disk, then install and import
            if (Find-Module -Name $m | Where-Object { $_.Name -eq $m }) {
                Write-Warning "$m module does not exist."
                Write-Host "We will attempt to install the module from the PowerShell Gallery. Please wait..."
                Install-Module -Name $m -Force -ErrorAction SilentlyContinue -Scope CurrentUser
                Import-Module $m -ErrorAction SilentlyContinue
            }
            else {
                # If module is not imported, not available on disk, and we cannot access it online, then abort
                Write-Host "Module $m not imported, not available on disk, and we are not able to download it from the online gallery... Exiting."
                EXIT 1
            }
        }
    }
}
#endregion

#region Get-ElevatedStatus
function Get-ElevatedStatus() {
<#
    .SYNOPSIS
	Confirms elevated permissions to run cmdlets.
    .DESCRIPTION
	Helper function
	Supporting function to confirm administrator permissions.
    .OUTPUTS
	Error on non-administrative permissions.
#>
    if (-NOT ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole(`
                [Security.Principal.WindowsBuiltInRole] "Administrator")) {
        Write-Warning "Insufficient permissions to run this cmdlet. Open the PowerShell console as an administrator and run this cmdlet again."
        Break
    }
}
#endregion

#region Get-HypervStatus
function Get-HypervStatus() {
    <#
    .SYNOPSIS
	Confirms that the HyperV role is installed ont he server.
    .DESCRIPTION
	Helper function
	Supporting function to ensure proper role is installed.
    .OUTPUTS
	Error on missing HyperV role.
    #>
    $hypervStatus = (Get-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V).State
    if ($hypervStatus -ne "Enabled") {
        Write-Host "Hyper-V is not running. This cmdlet must be run on a Hyper-V host."
        break
    }
}
#endregion
#### END HELPER FUNCTIONS

#### FLASHARRAY FUNCTIONS

#region Get-FlashArrayConnectDetails
function Get-FlashArrayConnectDetails() {
    <#
    .SYNOPSIS
    Outputs FlashArray connection details.
    .DESCRIPTION
    Output FlashArray connection details including Host and Volume names, LUN ID, IQN / WWN, Volume Provisioned Size, and Host Capacity Written.
    .PARAMETER EndPoint
    Required. FlashArray IP address or FQDN.
    .INPUTS
    None
    .OUTPUTS
    Formatted output details from Get-Pfa2Connection
    .EXAMPLE
    Get-FlashArrayConnectDetails.ps1 -EndPoint myArray

    .NOTES
    This cmdlet does not allow for use of OAUth authentication, only token authentication. Arrays with maximum API versions of 2.0 or 2.1 must use OAuth authentication. This will be added in a later revision.
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $EndPoint
    )
    Get-Sdk2Module
    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = Connect-Pfa2Array -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = Connect-Pfa2Array -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    # Create an object to store the connection details
    $ConnDetails = New-Object -TypeName System.Collections.ArrayList
    $Header = "HostName", "VolumeName", "LUNID", "IQNs", "WWNs", "Provisioned(TB)", "HostWritten(GB)"

    # Get Connections and filter out VVOL protocol endpoints
    $PureConns = (Get-Pfa2Connection -Array $FlashArray | Where-Object { !($_.Volume.Name -eq "pure-protocol-endpoint") })

    # For each Connection, build a row with the desired values from Connection, Host, and Volume objects. Add it to ConnDetails.
    ForEach ($PureConn in $PureConns) {
        $PureHost = (Get-Pfa2Host -Array $FlashArray | Where-Object { $_.Name -eq $PureConn.Host.Name })
        $PureVol = (Get-Pfa2Volume -Array $FlashArray | Where-Object { $_.Name -eq $PureConn.Volume.Name })

    # Calculate and format Host Written Capacity, Volume Provisioned Capacity
        $HostWrittenCapacity = [Math]::Round(($PureVol.Provisioned * (1 - $PureVol.Space.ThinProvisioning)) / 1GB, 2)
        $VolumeProvisionedCapacity = [Math]::Round(($PureVol.Provisioned ) / 1TB, 2)

        $NewRow = "$($PureHost.Name),$($PureVol.Name),$($PureConn.Lun),$($PureHost.Iqns),$($PureHost.Wwns),"
        $NewRow += "$($VolumeProvisionedCapacity),$($HostWrittenCapacity)"
        [void]$ConnDetails.Add($NewRow)
    }
    # Print ConnDetails and make it look nice
    $ConnDetails | ConvertFrom-Csv -Header $Header | Sort-Object HostName | Format-Table -AutoSize
}
#endregion

#region Get-FlashArrayVolumeGrowth.ps1
function Get-FlashArrayVolumeGrowth() {
    <#
    .SYNOPSIS
    Retrieves volume growth information over past X days at X percentage of growth.
    .DESCRIPTION
    Retrieves volume growth in GB from a FlashArray for volumes that grew in past X amount of days at X percentage of growth.
    .PARAMETER Arrays
    Required. An IP address or FQDN of the FlashArray(s). Multiple arrys can be specified, seperated by commas. Only use single-quotes or no quotes around the arrays parameter object. Ex. -Arrays array1,array2,array3 --or-- -Arrays 'array1,array2,array3'
    .PARAMETER MinimumVolumeAgeInDays
    Optional. The minimum age in days that a volume must be to report on it. If not specified, defaults to 1 day.
    .PARAMETER TimeFrameToCompareWith
    Required. The timeframe to compare the volume size against. Accepts '1h', '3h', '24h', '7d', '30d', '90d', '1y'.
    .PARAMETER GrowthPercentThreshold
    Optional. The minimum percentage of volume growth to report on. Specified as a numerical value from 1-99. If not specified, defaults to '1'.
    .PARAMETER DoNotReportGrowthOfLessThan
    Optional. If growth in size, in Gigabytes, over the specified period is lower than this value, it will not be reported. Specified as a numerical value. If not specified, defaults to '1'.
    .PARAMETER DoNotReportVolSmallerThan
    Optional. Volumes that are smaller than this size in Gigabytes will not be reported on. Specified as a numerical value + GB. If not specified, defaults to '1GB'.
    .PARAMETER html
    Optional. Switch. If present, produces a HTML of the output in the current folder named FlashArrayVolumeGrowthReport.html.
    .PARAMETER csv
    Optional. Switch. If present, produces a csv comma-delimited file of the output in the current folder named FlashArrayVolumeGrowthReport.csv.
    .INPUTS
    Specified inputs to calculate volumes reported on.
    .OUTPUTS
    Volume capacity information to the console, and also to a CSV and/or HTML formatted report (if specified).
    .EXAMPLE
    Get-FlashArrayVolumeGrowth -Arrays array1,array2 -GrowthPercentThreshold '10' -MinimumVolumeAgeInDays '1' -TimeFrameToCompareWith '7d' -DoNotReportGrowthOfLessThan '1' -DoNotReportVolSmallerThan '1GB' -csv

    Retrieve volume capacity report for array 1 and array2 comparing volumes over the last 7 days that:
        - volumes that are not smaller than 1GB in size
        - must have growth of less than 1GB
        - that are at least 1 day old
        - have grown at least 10%
        - output the report to a CSV delimited file
    .NOTES
    All arrays specified must use the same credential login.

    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string[]] $Arrays,
        [Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $MinimumVolumeAgeInDays = "1",
        [Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $TimeFrameToCompareWith,
        [Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $GrowthPercentThreshold = "1",
        [Parameter(Mandatory = $False)][string] $DoNotReportGrowthOfLessThan = "1",
        [Parameter(Mandatory = $False)][string] $DoNotReportVolSmallerThan = "1GB",
        [Parameter(Mandatory = $False)][switch] $csv,
        [Parameter(Mandatory = $False)][switch] $html
    )
    Get-Sdk1Module
    $cred = Get-Credential
    # Connect to FlashArray(s)
    $VolThatBreachGrowthPercentThreshold = @()
    foreach ($Array in $Arrays) {
        if (!($Creds)) {
            try {
                $FlashArray = New-PfaArray -EndPoint $Array -Credentials $cred -IgnoreCertificateError
            }
            catch {
                $ExceptionMessage = $_.Exception.Message
                Write-Error "Failed to connect to FlashArray endpoint $Array with: $ExceptionMessage"
                Return
            }
        }
        else {
            try {
                $FlashArray = New-PfaArray -EndPoint $Array -Credentials $Creds -IgnoreCertificateError
            }
            catch {
                $ExceptionMessage = $_.Exception.Message
                Write-Error "Failed to connect to FlashArray endpoint $Array with: $ExceptionMessage"
                Return
            }
        }
    }
    Write-Host ""
    Write-Host "Retrieving data from arrays and calculating." -ForegroundColor Yellow
    Write-Host "This may take some time depending on number of arrays, volumes, etc. Please wait..." -ForegroundColor Yellow
    Write-Host ""
    foreach ($Array in $Arrays) {
        Write-Host "Calculating array $Array..." -ForegroundColor Green
        Write-Host ""
        $VolDetails = (Get-PfaVolumes $FlashArray -ErrorAction SilentlyContinue)
        $VolDetailsExcludingNewAndSmall = $VolDetails | ? size -GT $DoNotRportVolSmallerThan | Where-Object { (Get-Date $_.created) -lt (Get-Date).AddDays(-$DaysSinceCommissioningToReportAfter) }
        $VolDetailsExcludingNewAndSmall = $VolDetailsExcludingNewAndSmall |
        % {
            $VolumeSpaceMetrics = Get-PfaVolumeSpaceMetricsByTimeRange -VolumeName $_.name -TimeRange $TimeFrameToCompareWith -Array $FlashArray
            $_ | Add-Member NoteProperty -PassThru -Force -Name "GrowthPercentage" -Value  $([math]::Round((($VolumeSpaceMetrics | select -Last 1).volumes / (1KB + ($VolumeSpaceMetrics | Select-Object -First 1).volumes)), 2)) | # 1KB+ appended to avoid devide by 0 errors
            Add-Member NoteProperty -PassThru -Force -Name "GrowthInGB" -Value  $([math]::Round(((($VolumeSpaceMetrics | Select-Object -Last 1).volumes - ($VolumeSpaceMetrics | Select-Object -First 1).volumes) / 1GB), 2)) | `
                Add-Member NoteProperty -PassThru -Force -Name "ArrayName" -Value $Array
        }
        $VolThatBreachGrowthPercentThreshold += $VolDetailsExcludingNewAndSmall | Where-Object { $_.GrowthPercentage -gt $GrowthPercentThreshold -and $_.GrowthInGB -gt $DoNotRportGrowthOfLessThan }

        if ($VolThatBreachGrowthPercentThreshold) {
            Write-Host "The following volumes have grown in the last $TimeFrameToCompareWith above the $GrowthPercentThreshold Percent of thier previous size:" -ForegroundColor Green
            ($($VolThatBreachGrowthPercentThreshold | Select-Object Name, ArrayName, GrowthInGB, GrowthPercentage) | Format-Table -AutoSize )
            $htmlOutput = ($($VolThatBreachGrowthPercentThreshold | Select-Object name, ArrayName, GrowthInGB, GrowthPercentage))
            $csvOutput = ($($VolThatBreachGrowthPercentThreshold | Select-Object name, ArrayName, GrowthInGB, GrowthPercentage))
        }
    }
    Write-Host " "
    Write-Host "Query parameters specified as:"
    Write-Host "1) Ignore volumes created in the last $DaysSinceCommissioningToReportAfter days, 2) Volumes smaller than $($DoNotRportVolSmallerThan / 1GB) GB, and 3) Growth lower than $DoNotRportGrowthOfLessThan GB." -ForegroundColor Green
    Write-Host " "
    if ($html.IsPresent) {
        Write-Host "Building HTML report as requested. Please wait..." -ForegroundColor Yellow
        $htmlParams = @{
            Title       = "Volume Capacity Report for FlashArrays"
            Body        = Get-Date
            PreContent  = "<p>Volume Capacity Report for FlashArrays $Arrays :</p>"
            PostContent = "<p>Query parameters specified as: 1) Ignore volumes created in the last $DaysSinceCommissioningToReportAfter days, 2) Volumes smaller than $($DoNotRportVolSmallerThan / 1GB) GB, and 3) Growth lower than $DoNotRportGrowthOfLessThan GB.</p>"
        }
        $htmlOutput | ConvertTo-Html @htmlParams | Out-File -FilePath .\FlashArrayVolumeGrowthReport.html | Out-Null
    }
    if ($csv.IsPresent) {
        Write-Host "Building CSV report as requested. Please wait..." -ForegroundColor Yellow
        $csvOutput | Export-Csv -NoTypeInformation -Path .\FlashArrayVolumeGrowthReport.csv
    }
    else {
        Write-Host " "
        Write-Host "No volumes on the array(s) match the requested criteria."
        Write-Host " "
    }
}
#endregion

#region Get-FlashArrayRASession.ps1
function Get-FlashArrayRASession() {
    <#
    .SYNOPSIS
    Retrieves Remote Assist status from a FlashArray.
    .DESCRIPTION
    Retrieves Remote Assist status from a FlashArray as disabled or enabled in a loop every 30 seconds until stopped.
    .PARAMETER EndPopint
    Required. FlashArray IP address or FQDN.
    .INPUTS
    EndPoint IP or FQDN required.
    .OUTPUTS
    Outputs Remote Assst status.
    .EXAMPLE
    Get-FlashArrayRASession -EndPoint myarray.mydomain.com

    Retrieves the current Remote Assist status and continues check status every 30 seconds until stopped.
    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position = 0, Mandatory = $True)][ValidateNotNullOrEmpty()][string] $EndPoint
    )
    Get-Sdk1Module
    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    While ($true) {
        If ((Get-PfaRemoteAssistSession -Array $FlashArray).Status -eq 'disabled') {
            Set-PfaRemoteAssistStatus -Array $FlashArray -Action connect
        }
        else {
            Write-Warning "Remote Assist session is not active."
            Start-Sleep 30
        }
    }
}
#endregion

#region Restore-PfaProtectionGroupVolumeSnapshots
function Restore-PfaPGroupVolumeSnapshots() {
	<#
    .SYNOPSIS
    Recover all of the volumes from a protection group (PGroup) snapshot.
    .DESCRIPTION
    This cmdlet will recover all of the volumes from a protection group (PGroup) snapshot in one operation.
    .PARAMETER ProtectionGroup
    Required. The name of the Protection Group.
    .PARAMETER SnapshotName
    Required. The name of the snapshot.
    .PARAMETER PGroupPrefix
    Required. The name of the Protection Group prefix.
    .PARAMETER Hostname
    Optional. The hostname to attach the snapshots to.
    .INPUTS
    None
    .OUTPUTS
    None
    .EXAMPLE

    Restore-PfaPGroupVolumeSnapshots –Array $array –ProtectionGroup "VOL1-PGroup" –SnapshotName "VOL1-PGroup.001" –Prefix TEST -Hostname HOST1

    Restores protection group snapshots named "VOL1-PGroup.001" from PGroup "VOL1-PGroup", adds the prefix of "TEST" to the name, and attaches them to the host "HOST1" on array $array.
    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
	Param (
		[Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $Array,
		[Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $ProtectionGroup,
		[Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $SnapshotName,
		[Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $PGroupPrefix,
		[Parameter(Mandatory = $False)][ValidateNotNullOrEmpty()][string] $Hostname

	)

    $PGroupVolumes = Get-PfaProtectionGroup -Array $Array -Name $ProtectionGroup -Session $Session
    $PGroupSnapshotsSet = $SnapshotName

    ForEach ($PGroupVolume in $PGroupVolumes)
    {
        For($i=0;$i -lt $PGroupVolume.volumes.Count;$i++)
        {
            $NewPGSnapshotVol = ($PGroupVolume.volumes[$i]).Replace($PGroupVolume.source+":",$Prefix+"-")
            $Source = ($PGroupSnapshotsSet+"."+$PGroupVolumes.volumes[$i]).Replace($PGroupVolume.source+":","")
            New-PfaVolume -Array $Array -VolumeName $NewPGSnapshotVol -Source $Source
            New-PfaHostVolumeConnection -Array $array -HostName $Hostname -VolumeName $NewPGSnapshotVol
        }
    }
}

#endregion

#region New-FlashArrayPGroupVolumes
function New-FlashArrayPGroupVolumes() {
    <#
    .SYNOPSIS
    Creates volumes to a new FlashArray Protection Group (PGroup).
    .DESCRIPTION
    This cmdlet will allow for the creation of multiple volumes and adding the created volumes to a new Protection Group (PGroup). The new volume names will default to "$PGroupPrefix-vol1", "PGroupPrefix-vol2" etc.
    .PARAMETER PGroupPrefix
    Required. The name of the Protection Group prefix to add volumes to. This parameter specifies the prefix of the PGroup name. The suffix defaults to "-PGroup". Example: -PGroupPrefix "database". The full PGroup name will be "database-PGroup".
    This PGroup will be created as new and must not already exist on the array.
    This prefix will also be used to uniquely name the volumes as they are created.
    .PARAMETER VolumeSizeGB
    Required. The size of the new volumes in Gigabytes (GB).
    .PARAMETER NumberOfVolumes
    Required. The number of volumes that are to be created. Each volume will be named "vol" with an ascending number following (ie. vol1, vol2, etc.). Each volume name will also contain the $PGroupPrefix variable as the name prefix.
    .INPUTS
    None
    .OUTPUTS
    None
    .EXAMPLE
    New-FlashArrayPGroupVolumes -PGroupPrefix "database" -VolumeSizeGB "200" -NumberOfVolumes "3"

    Creates 3-200GB volumes, named "database-vol1", "database-vol2", and "database-vol3". Each volume is added to the new Protection Group "database-PGroup".
    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $PGroupPrefix,
        [Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $VolumeSizeGB,
        [Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $NumberOfVolumes
    )
    Get-Sdk1Module
    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    $Volumes = @()
    for ($i = 1; $i -le $NumberOfVolumes; $i++) {
        New-PfaVolume -Array $FlashArray -VolumeName "$PGroupPrefix-Vol$i" -Unit G -Size $VolumeSizeGB
        $Volumes += "$PGroupPrefix-Vol$i"
    }
    $Volumes -join ","
    New-PfaProtectionGroup -Array $FlashArray -Name "$PGGroupPrefix-PGroup" -Volumes $Volumes
}
#endregion

#region Get-FlashArrayQuickCapacityStats
function Get-FlashArrayQuickCapacityStats() {
    <#
    .SYNOPSIS
    Quick way to retrieve FlashArray capacity statistics.
    .DESCRIPTION
    Retrieves high level capcity statistics from a FlashArray.
    .PARAMETER Names
    Required. A single name or array of names, comma seperated, of arrays to show acapacity information.
    .INPUTS
    Single or multiple FlashArray IP addresses or FQDNs.
    .OUTPUTS
    Outputs array capacity information
    .EXAMPLE
    Get-FlashArrayQuickCapacityStats -Names 'array1, array2'

    Retrieves capacity statistic information from FlashArray's array1 and array2.
    .NOTES
    The arrays supplied in the "Names" parameter must use the same credentials for access.

    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position = 0, Mandatory = $True)][ValidateNotNullOrEmpty()][string] $Names
    )
    Get-Sdk1Module
    if (!($Creds)) {
        $arrays = @()
        foreach ($name in $names) {
            try {
                $arrays += New-PfaArray -EndPoint $name -Credentials $cred -IgnoreCertificateError -Verbose -ErrorAction Stop
            }
            catch {
                Write-Output "Error accessing $name : $_"
            }
        }
    }
    else {
        $arrays = @()
        foreach ($name in $names) {
            try {
                $arrays += New-PfaArray -EndPoint $name -Credentials $Creds -IgnoreCertificateError -Verbose -ErrorAction Stop
            }
            catch {
                Write-Output "Error accessing $name : $_"
            }
        }
    }

    $spacemetrics = $arrays | Get-PfaArraySpaceMetrics -Verbose
    $spacemetrics = $spacemetrics | Select-Object *, @{N = "expvolumes"; E = { $_.volumes * $_.data_reduction } }, @{N = "provisioned"; E = { ($_.total - $_.system) / (1 - $_.thin_provisioning) * $_.data_reduction } }

    $totalcapacity = ($spacemetrics | Measure-Object capacity -Sum).Sum
    $totalvolumes = ($spacemetrics | Measure-Object volumes -Sum).Sum
    $totalvolumes_beforereduction = ($spacemetrics | Measure-Object expvolumes -Sum).Sum
    $totalprovisioned = ($spacemetrics | Measure-Object provisioned -Sum).Sum

    $1TB = 1024 * 1024 * 1024 * 1024
    $date = Get-Date
    Write-Host "On $($spacemetrics.Count) Pure FlashArrays, there is $([int]($totalcapacity/$1TB)) TB of capacity; $([int]($totalvolumes/$1TB)) TB written, reduced from $([int]($totalvolumes_beforereduction/$1TB)) TB. Total provisioned: $([int]($totalprovisioned/$1TB)) TB."
    Write-Host "Data collected on $date"
}
#endregion

#region Get-HostVolumeInfo
function Get-AllHostVolumeInfo() {
    <#
    .SYNOPSIS
    Retrieves Host Volume information from FlashArray.
    .DESCRIPTION
    Retrieves Host Volume information including volumes attributes from a FlashArray.
    .INPUTS
    EndPoint IP or FQDN required
    .OUTPUTS
    Outputs Host volume information
    .EXAMPLE
    Get-HostVolumeinfo -EndPoint myarray.mydomain.com

    Retrieves Host Volume information from the FlashArray myarray.mydomain.com.
    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
	[CmdletBinding()]
	Param (
        [Parameter(Position=0,Mandatory=$True)][ValidateNotNullOrEmpty()][string] $EndPoint
	)
	Get-Sdk1Module
    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

	$hostNames = Get-PfaHosts -array $FlashArray | Select-Object -Property name
	foreach ($hostName in $hostnames) {
		$hostvols = Get-PfaHostVolumeConnections -Array $FlashArray -Name $hostName.name
		$hostvols | Format-Table -AutoSize;
		ForEach-Object -InputObject $hostvols {
			$vols = $_.vol;
			$volattribs = @();
			if ($_.vol.count -gt 1) {
				for ($i = 0; $i -lt $_.vol.count; $i++) {
					$volattrib = Get-PfaVolume -Array $FlashArray -Name $vols[$i];
					$volattribs += $volattrib;
				}
				$volattribs |
				Select-Object name, created, source, serial, @{Name = "Size(GB)"; Expression = { $_.size / 1GB } } |
				Format-Table -AutoSize;
			}
			else {
				Get-PfaVolume -Array $FlashArray -Name $_.vol |
				Select-Object name, created, source, serial, @{Name = "Size(GB)"; Expression = { $_.size / 1GB } } |
				Format-Table -AutoSize;
			}
		}
	}
}
#endregion

#region Get-FlashArraySerialNumbers
function Get-FlashArraySerialNumbers() {
    <#
    .SYNOPSIS
    Retrieves FlashArray volume serial numbers connected to the host.
    .DESCRIPTION
    Cmdlet queries WMI on the localhost to retrieve the disks that are associated to Pure FlashArrays.
    .INPUTS
    EndPoint IP or FQDN required.
    .OUTPUTS
    Outputs serial numbers of FlashArrays devices.
    .EXAMPLE
    Get-FlashArraySerialNumbers

    Returns serial number information on Pure FlashArray disk devices connected to the host.
    #>
    $AllDevices = Get-WmiObject -Class Win32_DiskDrive -Namespace 'root\CIMV2'
    ForEach ($Device in $AllDevices) {
        if ($Device.Model -like 'PURE FlashArray*') {
            @{
                Name     = $Device.Name;
                Caption  = $Device.Caption;
                Index    = $Device.Index;
                SerialNo = $Device.SerialNumber;
            }
        }
    }
}
#endregion

#region New-HypervClusterVolumeReport
function New-HypervClusterVolumeReport() {
    <#
    .SYNOPSIS
    Creates a Excel report on volumes connected to a Hyper-V cluster.
    .DESCRIPTION
    This creates separate CSV files for VM, Windows Hosts, and FlashArray information that is part of a HyperV cluster. It then takes that output and places it into a an Excel workbook that contains sheets for each CSV file.
    .PARAMETER VmCsvFileName
    Optional. Defaults to VMs.csv.
    .PARAMETER WinCsvFileName
    Optional. defaults to WindowsHosts.csv.
    .PARAMETER PfaCsvFileName
    Optional. defaults to FlashArrays.csv.
    .PARAMETER ExcelFile
    Optional. defaults to HypervClusterReport.xlsx.
    .INPUTS
    Endpoint is mandatory. VM, Win, and PFA csv file names are optional.
    .OUTPUTS
    Outputs individual CSV files and creates an Excel workbook that is built using the required PowerShell module ImportExcel, created by Douglas Finke.
    .EXAMPLE
    New-HypervClusterVolumeReport -EndPoint myarray -VmCsvName myVMs.csv -WinCsvName myWinHosts.csv -PfaCsvName myFlashArray.csv -ExcelFile myExcelFile

    This will create three separate CSV files with HyperV cluster information and incorporate them into a single Excel workbook.
    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position = 0, Mandatory = $True)][ValidateNotNullOrEmpty()][string] $EndPoint,
        [Parameter(Mandatory=$False)][string]$VmCsvFileName = "VMs.csv",
        [Parameter(Mandatory=$False)][string]$WinCsvFileName = "WindowsHosts.csv",
        [Parameter(Mandatory=$False)][string]$PfaCsvFileName = "FlashArrays.csv",
        [Parameter(Mandatory=$False)][string]$ExcelFile = "HypervClusterReport.xlxs"
    )
    try {
        Get-ElevatedStatus

        Get-HypervStatus

        ## Check for modules & features
        Write-Host "Checking, installing, and importing prerequisite modules."
        [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
        $modulesArray = @(
            "PureStoragePowerShellSDK",
            "ImportExcel"
        )
        ForEach ($mod in $modulesArray) {
            If (Get-Module -ListAvailable $mod) {
                Continue
            }
            Else {
                Install-Module $mod -Force -ErrorAction 'SilentlyContinue'
                Import-Module $mod -ErrorAction 'SilentlyContinue'
            }
        }

        Write-Host "Checking and installing prerequisite Windows Features."
        $osVer = (Get-ComputerInfo).WindowsProductName
        $featuresArray = @(
            "hyper-v-powershell",
            "rsat-clustering-powershell"
        )
        ForEach ($fea in $featuresArray) {
            If (Get-WindowsFeature $fea | Select-Object -ExpandProperty installed) {
                Continue
            }
            Else {
                If ($osVer -le "2008") {
                    Add-WindowsFeature -Name $fea -Force -ErrorAction 'SilentlyContinue'
                }
                Else {
                    Install-WindowsFeature -Name $fea -Force -ErrorAction 'SilentlyContinue'
                }
            }
        }

        # Connect to FlashArray
        if (!($Creds)) {
            try {
                $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
            }
            catch {
                $ExceptionMessage = $_.Exception.Message
                Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
                Return
            }
        }
        else {
            try {
                $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
            }
            catch {
                $ExceptionMessage = $_.Exception.Message
                Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
                Return
            }
        }

        ## Get a list of VMs - VM Sheet
        $vmList = Get-VM -ComputerName (Get-ClusterNode)
        $vmList | ForEach-Object { $vmState = $_.state; $vmName = $_.name; Write-Output $_; } | ForEach-Object { Get-VHD -ComputerName $_.ComputerName -VMId $_.VMId
        } | Select-Object -Property path, @{n = 'VMName'; e = { $vmName } }, @{n = 'VMState'; e = { $vmState } }, computername, vhdtype, @{Label = 'Size(GB)'; expression = { [Math]::Round($_.size / 1gb, 2) -as [int] } }, @{label = 'SizeOnDisk(GB)'; expression = { [Math]::Round($_.filesize / 1gb, 2) -as [int] } } | Export-Csv $VmCsvFileName
        Import-Csv $VmCsvFileName | Export-Excel -Path $ExcelFile -AutoSize -WorkSheetname 'VMs'

        ## Get windows physical disks - Windows Host Sheet
        Get-ClusterNode | ForEach-Object { Get-WmiObject Win32_Volume -Filter "DriveType='3'" -ComputerName $_ | ForEach-Object {
                [pscustomobject][ordered]@{
                    Server        = $_.__Server
                    Label         = $_.Label
                    Name          = $_.Name
                    TotalSize_GB  = ([Math]::Round($_.Capacity / 1GB, 2))
                    FreeSpace_GB  = ([Math]::Round($_.FreeSpace / 1GB, 2))
                    SizeOnDisk_GB = ([Math]::Round(($_.Capacity - $_.FreeSpace) / 1GB, 2))
                }
            } } | Export-Csv $WinCsvFileName -NoTypeInformation
        Import-Csv $WinCsvFileName | Export-Excel -Path $ExcelFile -AutoSize -WorkSheetname 'Windows Hosts'
        ## Get Pure FlashArray volumes and space - FlashArray Sheet
        Function GetSerial {
            [Cmdletbinding()]
            Param(   [Parameter(ValueFromPipeline)]
                $findserial)
            $GetVol = Get-Volume -FilePath $findserial | Select-Object -ExpandProperty path
            $GetDiskNum = Get-Partition | Where-Object -Property accesspaths -CContains $getvol | Select-Object disknumber
            Get-Disk -Number $getdisknum.disknumber | Select-Object serialnumber
        }
        $pathQ = $VmList | ForEach-Object { Get-VHD -ComputerName $_.ComputerName -VMId $_.VMId } | Select-Object -ExpandProperty path
        $serials = GetSerial { $pathQ } -ErrorAction SilentlyContinue

        ## FlashArray volumes
        $pureVols = Get-PfaVolumes -Array $FlashArray | Where-Object { $serials.serialnumber -contains $_.serial } | ForEach-Object { Get-PfaVolumeSpaceMetrics -Array $FlashArray -VolumeName $_.name } | Select-Object name, size, total, data_reduction

        $pureVols | Select-Object Name, @{Name = "Size(GB)"; Expression = { [math]::round($_.size / 1gb, 2) } }, @{Name = "SizeOnDisk(GB)"; Expression = { [math]::round($_.total / 1gb, 2) } }, @{Name = "DataReduction"; Expression = { [math]::round($_.data_reduction, 2) } } | Export-Csv $PfaCsvFileName -NoTypeInformation
        Import-Csv $PfaCsvFileName | Export-Excel -Path $ExcelFile -AutoSize -WorkSheetname 'FlashArrays'

    }
    catch {
        Write-Host "There was a problem running this cmdlet. Please try again or submit an Issue in the GitHub Repository."
    }
}
#endregion

#region Sync-FlashArrayHosts
function Sync-FlashArrayHosts() {
    <#
    .SYNOPSIS
    Synchronizes the hosts amd host protocols between two FlashArrays.
    .DESCRIPTION
    This cmdlet will retrieve the current hosts from the Source array and create them on the target array. It will also add the FC (WWN) or iSCSI (iqn) settings for each host on the Target array.
    .PARAMETER SourceArray
    Required. FQDN or IP address of the source FlashArray.
    .PARAMETER TargetArray
    Required. FQDN or IP address of the source FlashArray.
    .PARAMETER Protocol
    Required. 'FC' for Fibre Channel WWNs or 'iSCSI' for iSCSI IQNs.
    .INPUTS
    None
    .OUTPUTS
    None
    .EXAMPLE
    Sync-FlashArraysHosts -SourceArray mySourceArray -TargetArray myTargetArray -Protocol FC

    Synchronizes the hosts and hosts FC WWNs from the mySourceArray to the myTargetArray.
    .NOTES
    This cmdlet cannot utilize the global $Creds variable as it requires two logins to two separate arrays.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position=0,Mandatory=$True)][ValidateNotNullOrEmpty()][string] $SourceArray,
        [Parameter(Position=1,Mandatory=$True)][ValidateNotNullOrEmpty()][string]$TargetArray,
        [Parameter(Mandatory = $True)][ValidateSet("iSCSI", "FC")][string]$Protocol
    )

    $FlashArray1 = New-PfaArray -EndPoint $SourceArray -Credentials (Get-Credential) -IgnoreCertificateError
    $FlashArray2 = New-PfaArray -EndPoint $TargetArray -Credentials (Get-Credential) -IgnoreCertificateError

    Get-PfaHosts -Array $FlashArray1 | New-PfaHost -Array $FlashArray2
    Get-PfaHostGroups -Array $FlashArray1 | New-PfaHostGroup -Array $FlashArray2

    $fa1Hosts = Get-PfaHosts -Array $FlashArray1

    switch ($Procotol) {
        'iSCSI' {
            foreach ($fa1Host in $fa1Hosts) {
                Add-PfaHostIqns -Array $FlashArray2 -AddIqnList $fa1Host.iqn -Name $fa1Host.name
            }
        }
        'FC' {
            foreach ($fa1Host in $fa1Hosts) {
                Add-PfaHostWwns -Array $FlashArray2 -AddWwnList $fa1Host.wwn -Name $fa1Host.name
            }
        }
    }
}
#endregion

#region Get-FlashArrayStaleSnapshots
function Get-FlashArrayStaleSnapshots() {
    <#
    .SYNOPSIS
    Retrieves aged snapshots and allows for Deletion and Eradication of such snapshots.
    .DESCRIPTION
    This cmdlet will retrieve all snapshots that are beyond the specified SnapAgeThreshold. It allows for the parameters of Delete and Eradicate, and if set to $true, it will delete and eradicate the snapshots returned. It allows for the parameter of Confirm, and if set to $true, it will prompt before deletion and/or eradication of the snapshots.
    Snapshots must be deleted before they can be eradicated.
    .PARAMETER EndPoint
    Required. Endpoint is the FlashArray IP or FQDN.
    .PARAMETER SnapAgeThreshold
    Required. SnapAgeThreshold is the number of days from the current date. Delete. Confirm, and Eradicate are optional.
    .PARAMETER Delete
    Optional. If set to $true, delete the snapshots.
    .PARAMETER Eradicate
    Optional. If set to $true, eradicate the deleted snapshots (snapshot must be flagged as deleted).
    .PARAMETER Confirm
    Optional. If set to $true, provide user confirmation for Deletion or Eradication of the snapshots.
    .OUTPUTS
    Returns a listing of snapshots that are beyond the specified threshold and displays final results.
    .EXAMPLE
    Get-FlashArrayStaleSnapshots -EndPoint myArray -SnapAgeThreshold 30

    Returns all snapshots that are older than 30 days from the current date.

    .EXAMPLE
    Get-FlashArrayStaleSnapshots -EndPoint myArray -SnapAgeThreshold 30 -Delete:$true -Eradicate:$true -Confirm:$false

    Returns all snapshots that are older than 30 days from the current date, deletes and eradicates them without confirmation.
    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position = 0, Mandatory = $True)][ValidateNotNullOrEmpty()][string] $EndPoint,
        [Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $SnapAgeThreshold,
        [switch]$Delete,
        [switch]$Eradicate,
        [switch]$Confirm
    )
    # Establish variables, Pure time format, and gather current time.
    $1GB = 1024 * 1024 * 1024
    $CurrentTime = Get-Date
    $DateTimeFormat = 'yyyy-MM-ddTHH:mm:ssZ'

    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    # Establish and reset counter variables.
    [int]$SpaceConsumedTotal = 0
    [int]$SnapNumberTotal = 0
    $Timespan = $null
    [int]$SpaceConsumed = 0
    [int]$SnapNumber = 0
    try {
        $Snapshots = Get-PfaAllVolumeSnapshots -Array $FlashArray

        Write-Output ""
        Write-Output "========================================================================="
        Write-Output "      $EndPoint                               "
        Write-Output "========================================================================="
    }
    catch {
        Write-Host "Error processing $($EndPoint)."
    }
    #Get all snapshots and compute the age of them. $DateTimeFormat variable taken from above; this is needed in order to parse Pure time format.
    foreach ($Snapshot in $Snapshots) {
        $SnapshotDateTime = $Snapshot.created
        $SnapshotDateTime = [datetime]::ParseExact($SnapshotDateTime, $DateTimeFormat, $null)
        $Timespan = New-TimeSpan -Start $SnapshotDateTime -End $CurrentTime
        $SnapAge = $($Timespan.Days + $($Timespan.Hours / 24) + $($Timespan.Minutes / 1440))
        $SnapAge = [math]::Round($SnapAge, 2)

        #Find snaps older than given threshold and output with formatted data.
        if ($SnapAge -gt $SnapAgeThreshold) {
            $SnapStats = Get-PfaSnapshotSpaceMetrics -Array $FlashArray -Name $Snapshot.name
            $SnapSize = [math]::round($($SnapStats.total / $1GB), 2)
            $SpaceConsumed = $SpaceConsumed + $SnapSize
            $SnapNumber = $SnapNumber + 1

            #Delete snapshots
            if ($Delete -eq $true -and $Eradicate -eq $true) {
                Remove-PfaVolumeOrSnapshot -Array $FlashArray -Name $Snapshot.name -Eradicate -Confirm $Confirm
                Write-Output "Eradicating $($Snapshot.name) - $($SnapSize) GB."
            }
            elseif ($Delete -eq $true) {
                Remove-PfaVolumeOrSnapshot -Array $FlashArray -Name $Snapshot.name -Confirm $Confirm
                Write-Output "Deleting $($Snapshot.name) - $($SnapSize) GB."
            }
            else {
                Write-Output $Snapshot.name
                Write-Output "          $SnapSize GB"
                Write-Output "          $SnapAge days"
            }
        }

    }
    #Display final message for array results.
    Write-Output "There are $($SnapNumber) snapshot(s) older than $($SnapAgeThreshold) days consuming a total of $($SpaceConsumed) GB on the array."

    $SnapNumberTotal = $SnapNumberTotal + $SnapNumber
    $SpaceConsumedTotal = $SpaceConsumedTotal + $SpaceConsumed
}
Write-Output "There are $($SnapNumberTotal) snapshot(s) older than $($SnapAgeThreshold) days consuming a total of $($SpaceConsumedTotal) GB."
#endregion

#region Get-FlashArrayDisconnectedVolumes
Function Get-FlashArrayDisconnectedVolumes() {
    <#
    .SYNOPSIS
    Retrieves disconnected volume information for a FlashArray.
    .DESCRIPTION
    This cmdlet will retrieve information for volumes that are ina disconnected state for a FlashArray.
    .PARAMETER EndPoint
    Required. FQDN or IP address of the FlashArray.
    .INPUTS
    None
    .OUTPUTS
    Disconnected volume information is displayed.
    .EXAMPLE
    Get-FlashArrayDisconnectedVolumes -EndPoint myArray
    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position = 0, Mandatory = $True)][ValidateNotNullOrEmpty()][string] $EndPoint
    )
    #Math values
    $1GB = 1024 * 1024 * 1024
    $1TB = 1024 * 1024 * 1024 * 1024
    Get-Sdk1Module

    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    $faSpace = Get-PfaArraySpaceMetrics -Array $FlashArray

    $Hosts = Get-PfaHosts -Array $FlashArray
    ForEach ($HostVol in $Hosts) {
        $ConnectedVolumes += @(Get-PfaHostVolumeConnections -Array $FlashArray -Name $HostVol.name | Select-Object vol)
    }

    #Get all volumes
    $AllVolumes = @(Get-PfaVolumes -Array $FlashArray | Select-Object name)
    $hash = @{}
    foreach ($i in $ConnectedVolumes) {
        $Vol = $i.vol
        $hash.Add($z, $Vol)
        $z++
    }
    foreach ($j in $AllVolumes) {
        if (!$hash.ContainsValue($j.name)) {
            $DisconnectedVolumes += $j.name
        }
        else {
            $hash.Remove($j.name)
        }
    }
    Write-Output ""
    Write-Output "`t$($FlashArray) - $([math]::Round((($faSpace.total)/$1TB),2)) TB/$([math]::Round($(($faSpace.capacity)/$1TB),2)) TB ($([math]::Round((($faSpace.total)*100)/$($faSpace.capacity),2))% Full)`n"
    Write-Output "==================================================="
    Write-Output "`t`t Disconnected Volumes ($($DisconnectedVolumes.Count-1) of $($hash.Count))"
    Write-Output "==================================================="

    #If the array has a disconnected volume, gather volume space metrics
    if (($DisconnectedVolumes.Count) -gt 1 ) {
        foreach ($DisconnectedVolume in $DisconnectedVolumes) {
            if ($null -ne $DisconnectedVolume) {
                $VolDetails = Get-PfaVolumeSpaceMetrics -array $FlashArray -VolumeName $DisconnectedVolume
                $GetVol = Get-PfaVolume -Array $FlashArray -Name $DisconnectedVolume
                $VolSerial = $GetVol.serial
                $Space = ($($VolDetails.volumes / $1GB))
                $Space = [math]::Round($Space, 3)
                $Total = [math]::Round(($($VolDetails.size / $1TB)), 3)
                $Reduction = $VolDetails.data_reduction
                $Reduction = [math]::Round($Reduction, 0)
                Write-Output "$($DisconnectedVolume) `n`t $($VolSerial) `n`t $($Space) GB Consumed `n`t $($Total) TB Provisioned `n`t $($Reduction):1 Reduction `n" | Format-List
                $PotentialSpaceSavings = $PotentialSpaceSavings + $($VolDetails.volumes / $1GB)
            }
        }
        Write-Output "Potential space savings for $($faEndPoint) is $([math]::Round($PotentialSpaceSavings,3)) GB."
    }
    else {
        Write-Output "No Disconnected Volumes found."
    }
}
#endregion

#region Get-FlashArraySpace
Function Get-FlashArraySpace() {
    <#
    .SYNOPSIS
    Retrieves the space used and available for a FlashArray.
    .DESCRIPTION
    This cmdlet will return various array space metrics for the given FlashArray.
    .PARAMETER EndPoint
    Required. FQDN or IP address of the FlashArray.
    .INPUTS
    None
    .OUTPUTS
    Various FlashArray space used and available information.
    .EXAMPLE
    Get-FlashArraySpace -EndPoint myArray

    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position = 0, Mandatory = $True)][ValidateNotNullOrEmpty()][string] $EndPoint
    )
    Get-Sdk1Module
    #Math values
    #	[double]$1GB = 1024 * 1024 * 1024
    [double]$1TB = 1024 * 1024 * 1024 * 1024

    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    $ArraySpace = @()
    $faSpace = Get-PfaArraySpaceMetrics -Array $FlashArray
    $faSpace | Select-Object @{name = 'Hostname'; expr = { $_.Hostname } },
    @{name = 'Percent Used'; expr = { ($faSpace.total / $faSpace.capacity).ToString("P") } },
    @{name = 'Capacity Used (TB)'; expr = { ([math]::Round([double]($_.Total / $1TB), 2)) } },
    @{name = 'Capacity Free (TB)'; expr = { ([math]::Round((($faSpace.capacity - $faSpace.total) / $1TB), 2)) } },
    @{name = 'Volume Space (TB)'; expr = { ([math]::Round([double]($_.Volumes / $1TB), 2)) } },
    @{name = 'Shared Space (TB)'; expr = { ([math]::Round([double]($_.Shared_Space / $1TB), 2)) } },
    @{name = 'Snapshot Space (TB)'; expr = { ([math]::Round([double]($_.Snapshots / $1TB), 2)) } },
    @{name = 'System Space (TB)'; expr = { ([math]::Round([double]($_.System / $1TB), 2)) } },
    @{name = 'Total Storage (TB)'; expr = { ([math]::Round([double]($_.Capacity / $1TB), 2)) } },
    @{name = 'Data Reduction'; expr = { [math]::Round($_.Data_Reduction, 2) } },
    @{name = 'Thin Provisioning'; expr = { [math]::Round($_.Thin_Provisioning * 10, 2) } }
    $ArraySpace | Format-Table -AutoSize
}
#endregion

#region Get-FlashArrayPgroupsConfig
Function Get-FlashArrayPgroupsConfig() {
    <#
    .SYNOPSIS
    Retrieves Protection Group (PGroup) information for the FlashArray.
    .DESCRIPTION
    Retrieves Protection Group (PGroup) information for the FlashArray.
    .PARAMETER EndPoint
    Required. FQDN or IP address of the FlashArray.
    .INPUTS
    None
    .OUTPUTS
    Protection Group information is displayed.
    .EXAMPLE
    Get-FlashArrayPgroupsConfig -EndPoint myArrayg

    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position = 0, Mandatory = $True)][ValidateNotNullOrEmpty()][string] $EndPoint
    )
    Get-Sdk1Module

    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    $ProtectionGroups = Get-PfaProtectionGroups -Array $FlashArray
    $ErrorActionPreference = "Continue"

    foreach ($ProtectionGroup in $ProtectionGroups) {
        $RetentionDetails = Get-PfaProtectionGroupRetention -Array $FlashArray -ProtectionGroupName $ProtectionGroup.name
        $ScheduleDetails = Get-PfaProtectionGroupSchedule -Array $FlashArray -ProtectionGroupName $ProtectionGroup.name

        if ($ScheduleDetails.replicate_enabled -eq "True") {
            Write-Host "========================================================================================"
            Write-Host "                 $($ProtectionGroup.name)                               " -ForegroundColor Green
            Write-Host "========================================================================================"
            Write-Host "Host Groups: $($ProtectionGroup.hgroups)"
            Write-Host "Hosts: $($ProtectionGroup.hosts)"
            Write-Host "Volumes: $($ProtectionGroup.volumes)"
            Write-Host ""
            Write-Host "A snapshot is taken and replicated every $($ScheduleDetails.replicate_frequency/60) minutes."
            Write-Host "$(($RetentionDetails.target_all_for/60)/($ScheduleDetails.replicate_frequency/60)) snapshot(s) are kept on the target for $($RetentionDetails.target_all_for/60) minutes."
            Write-Host "$($RetentionDetails.target_per_day) additional snapshot(s) are kept for $($RetentionDetails.target_days) more days."
        }
        else {
            Write-Host "=========================================================================================="
            Write-Host "                $($ProtectionGroup.name)                               " -ForegroundColor Yellow
            Write-Host "=========================================================================================="
            Write-Host "Host Groups: $($ProtectionGroup.hgroups)"
            Write-Host "Hosts: $($ProtectionGroup.hosts)"
            Write-Host "Volumes: $($ProtectionGroup.volumes)"
            Write-Host ""
            Write-Host "$($ProtectionGroup.name) is disabled." -ForegroundColor Yellow
            Write-Host ""
        }
    }
}
#endregion

#region Remove-FlashArrayPendingDeletes
Function Remove-FlashArrayPendingDeletes() {
    <#
    .SYNOPSIS
    Reports on pending FlashArray Volume and Snapshots deletions and optionally Eradicates them.
    .DESCRIPTION
    This cmdlet will return information on any volumes or volume snapshots that are pending eradication after deletion and optionally prompt for eradication of those objects. The user will be prompted for confirmation.
    .PARAMETER EndPoint
    Required. FQDN or IP address of the FlashArray.
    .INPUTS
    None
    .OUTPUTS
    Volume and volume snapshots awaiting eradication.
    .EXAMPLE
    Remove-FlashArrayPendingDelete -EndPoint myArray

    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position = 0, Mandatory = $True)][ValidateNotNullOrEmpty()][string] $EndPoint
    )

    Get-Sdk1Module

    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    $pendingvolumelist = Get-PfaPendingDeleteVolumes -Array $FlashArray
    $pendingsnaplist = Get-PfaPendingDeleteVolumeSnapshots -Array $FlashArray
    if (!pendingvolumelist) {
        Write-Host "No volumes are pending delete."
    }
    else {
    Write-Host "Listing PENDING volumes and snapshots that exist on the array."
    Write-Host "======================================================================================================================`n"
    Write-Host "Volumes in PENDING state"
    foreach ($volume in $pendingvolumelist) {
        Write-Host " -" $volume.name
    }
    }
    if (!pendingsnaplist) {
        Write-Host "No snapshots are pending delete."
        break
    }
    else {
    Write-Host "Snapshots in PENDING state"
    foreach ($volumesnap in $pendingsnaplist) {
        Write-Host " -" $volumesnap.name
    }
    }
    $confirmstring = "proceed"
    Write-Host "Please confirm that you wish to perform an unrecoverable operation."
    Write-Host "======================================================================================================================`n"
    Write-Host "Please type the word $confirmstring to eradicate the pending deleted volumes and snapshots."
    Write-Host "The action will initiate immediately upon inputting $confirmstring . This operation CANNOT be undone." -fore yellow
    $user_response = Read-Host "`t"
    if (($user_response.ToLower() -ne $confirmstring.ToLower())) {
        Write-Host "Your input was [$user_response]. It was not the word $confirmstring. Exiting."
        exit
    }
    Write-Host "Eradicating PENDING volumes and snapshots."
    Write-Host "======================================================================================================================`n"

    foreach ($volume in $pendingvolumelist) {
        Write-Host " -" $volume.name " eradicated."
        Remove-PfaVolumeOrSnapshot -Array $FlashArray -Name $volume.name -Eradicate
    }

    foreach ($volumesnap in $pendingsnaplist) {
        Write-Host " -" $volumesnap.name " eradicated"
        Remove-PfaVolumeOrSnapshot -Array $FlashArray -Name $volumesnap.name -Eradicate
    }
    Write-Host "Volume and Snapshot pending deletes have been eradicated."
}
#endregion

#region Get-FlashArrayConfig
Function Get-FlashArrayConfig() {
    <#
    .SYNOPSIS
    Retrieves and outputs to a file the configuration of the FlashArray.
    .DESCRIPTION
    This cmdlet will run Purity CLI commands to retrieve the base configuration of a FlashArray and output it to a file. This file is formatted for the CLI, not necessarily human-readable.
    .PARAMETER EndPoint
    Required. FQDN or IP address of the FlashArray.
    .PARAMETER OutFile
    Optional. The file path and filename that will contain the output. if not specified, the default is the current folder\Array_Config.txt.
    .PARAMETER ArrayName
    Optional. The FlashArray name to use in the output. Defaults to $EndPoint.
    .INPUTS
    None
    .OUTPUTS
    Configuration file.
    .EXAMPLE
    Get-FlashArray -EndPoint myArray -ArrayName Array100

    Retrieves the configuration for a FlashArray and stores it in the current path as Array100_config.txt.

    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position = 0, Mandatory = $True)][ValidateNotNullOrEmpty()][string] $EndPoint,
        [Parameter(Mandatory = $False)][string] $OutFile = "Array_Config.txt",
        [Parameter(Mandatory = $False)][string] $ArrayName
    )
    Get-Sdk1Module
    $GetDate = Get-Date
    # Connect to FlashArray
    if (!($Creds)) {
        $Creds = Get-Credential
    }

    If (!$ArrayName) {
        $ArrayName = $EndPoint
    }

    "==================================================================================" | Out-File -FilePath $OutFile -Append
    "FlashArray Configuration Export for: $($ArrayName)" | Out-File -FilePath $OutFile -Append
    "Date: $($GetDate)" | Out-File -FilePath $OutFile -Append
    "==================================================================================`n" | Out-File -FilePath $OutFile -Append
    $InvokeCommand_pureconfig_list_object = "pureconfig list --object"
    $InvokeCommand_pureconfig_list_system = "pureconfig list --system"
    Write-Host "Retrieving FlashArray OBJECT configuration export (host-pod-volume-hgroup-connection)..."
    "FlashArray OBJECT configuration export (host-pod-volume-hgroup-connection)..." | Out-File -FilePath $OutFile -Append
    " " | Out-File -FilePath $OutFile -Append
    New-PfaCLICommand -EndPoint $EndPoint -Credentials $Creds -CommandText $InvokeCommand_pureconfig_list_object | Out-File -FilePath $OutFile -Append
    Write-Host "Retrieving FlashArray SYSTEM configuration export (array-network-alert-support)..."
    "FlashArray SYSTEM configuration export (array-network-alert-support):" | Out-File -FilePath $OutFile -Append
    " " | Out-File -FilePath $OutFile -Append
    New-PfaCLICommand -EndPoint $EndPoint -Credentials $Creds -CommandText $InvokeCommand_pureconfig_list_system | Out-File -FilePath $OutFile -Append
    Write-Host "FlashArray configuration file located in $Outfile." -ForegroundColor Green
}
#endregion

#region Get-FlashArrayHierarchy
Function Get-FlashArrayHierarchy() {
    <#
    .SYNOPSIS
    Displays array hierarchy in relation to hosts and/or volumes.
    .DESCRIPTION
    This cmdlet will display the hierarchy from a FlashArray of hosts and volumes. The output is to the console in text.
    .PARAMETER EndPoint
    Required. FQDN or IP address of the FlashArray.
    .INPUTS
    None
    .OUTPUTS
    FlashArray host and/or volume hierarchy.
    .EXAMPLE
    Get-FlashArrayHierarchy -EndPoint myArray

    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position = 0, Mandatory = $True)][ValidateNotNullOrEmpty()][string] $EndPoint
    )

    Get-Sdk1Module

    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    $Initiators = Get-PfaHosts -Array $FlashArray
    $Volumes = Get-PfaVolumes -Array $FlashArray
    $1GB = 1024 * 1024 * 1024
    Write-Host ""
    Write-Host "Please indicate if you would like to see the hierarchy by host." -ForegroundColor Cyan
    Write-Host "This process will take a couple minutes, but is useful to find disconnected hosts or hosts with no replication group." -ForegroundColor Cyan
    Write-Host "Otherwise, the hierarchy will be shown at the volume level." -ForegroundColor Cyan
    Write-Host ""
    $ByHost = Read-Host -Prompt "Do you want to view hierarchy by individual hosts? (Y/N)"

    Write-Host ""
    Write-Host "================================================================"
    Write-Host "                    $EndPoint Hierarchy"
    Write-Host "================================================================"
    #If else statement to control hierarchy displayed by host or by volume
    If ($ByHost -eq "Y" -or $ByHost -eq "y") {

        #Start at host level
        ForEach ($Initiator in $Initiators) {
            Write-Host "  [H] $($Initiator.name)"
            $Volumes = Get-PfaHostVolumeConnections -Array $FlashArray -Name $Initiator.name
            If (!$Volumes) {
                Write-Host ' [No volumes connected]' -ForegroundColor Yellow
            }
            Else {

                #Start at volume level
                ForEach ($Volume in $Volumes) {

                    #Reset variables
                    $Snapshots = Get-PfaVolumeSnapshots -Array $FlashArray -VolumeName $Volume.vol
                    $SnapshotDetails = Get-PfaSnapshotSpaceMetrics -Array $FlashArray -name $Volume.vol
                    $SpaceConsumed = 0

                    #Change value for snapshot count threshold
                    If ($Snapshots.Count -eq 0) {
                        Write-Host " [V]$($Volume.vol)" -ForegroundColor Yellow
                        Write-Host " There are no associated snapshots with this volume." -ForegroundColor Red
                    }
                    Else {
                        Write-Host " [V]$($Volume.vol)" -ForegroundColor Green
                    }

                    #Space consumed computation for each volume
                    ForEach ($SnapshotDetail in $SnapshotDetails) {
                        $SpaceConsumed = $SpaceConsumed + $SnapshotDetail.total
                    }

                    #Change value for snapshot count threshold
                    ForEach ($Snapshot in $Snapshots) {
                        If ($Snapshots.Count -gt 1) {
                            Write-Host " [S] $($Snapshot.name)" -ForegroundColor Yellow
                        }
                        Else {
                            Write-Host " [S] $($Snapshot.name)" -ForegroundColor Green
                        }
                    }

                    #Display space consumed if snapshot count exceeds threshold
                    If ($Snapshots.Count -gt 1) {
                        Write-Host  " There are $($Snapshots.Count) snapshots associated with this volume consuming a total of $([math]::Round($SpaceConsumed/$1GB,2)) GB on the array."
                    }
                }
            }
        }
    }
    #If user does not want hierarchy at host level
    Else {

        #Start volume level
        ForEach ($Volume in $Volumes) {

            #Reset variables
            $Snapshots = Get-PfaVolumeSnapshots -Array $FlashArray -VolumeName $Volume.name
            $SnapshotDetails = Get-PfaSnapshotSpaceMetrics -Array $FlashArray -name $Volume.name
            $SpaceConsumed = 0

            #Change value for snapshot count threshold
            If ($Snapshots.Count -eq 0) {
                Write-Host " [V]$($Volume.name)" -ForegroundColor Yellow
                Write-Host " There are no associated snapshots with this volume." -ForegroundColor Red
            }
            Else {
                Write-Host " [V]$($Volume.name)" -ForegroundColor Green
            }

            #Space Consumed computation for each volume
            ForEach ($SnapshotDetail in $SnapshotDetails) {
                $SpaceConsumed = $SpaceConsumed + $SnapshotDetail.total
            }

            #Change value for snapshot count threshold
            ForEach ($Snapshot in $Snapshots) {
                If ($Snapshots.Count -gt 1) {
                    Write-Host " [S] $($Snapshot.name)" -ForegroundColor Yellow
                }
                Else {
                    Write-Host " [S] $($Snapshot.name)" -ForegroundColor Green
                }
            }

            #Display space consumed if snapshot count threshold is exceeded
            If ($Snapshots.Count -gt 1) {
                Write-Host  "There are $($Snapshots.Count) snapshots associated with this volume consuming a total of $([math]::Round($SpaceConsumed/$1GB,2)) GB on the array."
            }
        }
    }
}
#endregion

#region New-FlashArrayExcelReport
Function New-FlashArrayExcelReport() {
    <#
    .SYNOPSIS
    Create an Excel workbook that contains FlashArray Information for each array specified in a file.
    .DESCRIPTION
    This cmdlet will retrieve array, volume, host, pod, and snapshot capacity information from all of the FlashArrays listed in the txt file and output it to an Excel spreadsheet. Each arrays will have it's own filename and the current date and time will be added to the filenames.
    This cmdlet requires the PowerShell module ImportExcel - https://www.powershellgallery.com/packages/ImportExcel
    .PARAMETER Username
    Optional. Required if $Creds variable is not used.
    Full username to login to the arrays. This currently must be the same username for all arrays. This user must have the array-admin role.
    If not supplied, the $Creds variable must exist in the session and be set by Get-Credential.
    .PARAMETER PassFilePath
    Optional. Required if $Creds variable is not used.
    Full path and filename that contains the plaintext password for the $username. The password will be encrypted when passing to the array.
    If not supplied, the $Creds variable must exist in the session and be set by Get-Credential.
    .PARAMETER ArrayList
    Required. Full path to file name that contains IP addresses or FQDN's for all FlashAarays being reported on. This is a plain text file with each array on a new line.
    .PARAMETER OutPath
    Optional. Full directory path (with no trailing "\") for Excel workbook, formatted as DRIVE_LETTER:\folder_name. If not specified, the files will be placed in the %temp% folder.
    .PARAMETER snapLimit
    Optional. This will limit the total number of Volume snapshots returned from the arrays. This will be beneficial when working with a large number of snapshots. With a large number of snapshots, and not setting this limit, the worksheet creation time is increased considerably.
    .INPUTS
    None
    .OUTPUTS
    An Excel workbook
    .EXAMPLE
    New-FlashArrayExcelReport -Username "pureuser" -PassFilePath "c:\temp\creds.txt" -ArrayList "c:\temp\arrays.txt"

    Creates an Excel file in the the %temp% folder for each array in the Arrays.txt file, using the username and plaintext password file supplied.

    .EXAMPLE
    $Creds = (Get-Credential)
    New-FlashArrayExcelReport -ArrayList "c:\temp\arrays.txt" -snapLimit 25 -OutPath "c:\outputs"

    Creates an Excel file for each array in the Arrays.txt file, using the credentials preconfigured via the Get-Credentials cmdlet supplied.

    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    This cmdlet requires the PowerShell module ImportExcel.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $True)][ValidateNotNullOrEmpty()][string] $Arraylist,
        [Parameter(Mandatory = $False)][string] $OutPath = "$env:Temp",
        [Parameter(Mandatory = $False)][string] $snapLimit,
        [Parameter(Mandatory = $False)][string] $Username,
        [Parameter(Mandatory = $False)][string] $PassFilePath
    )

# Check for Creds
if (!($Creds)) {
            $pass = Get-Content -Path $PassFilePath | ConvertTo-SecureString -AsPlaintext
            $Creds = New-Object System.Management.Automation.PSCredential($username,$pass)
    }

# Check for modules & features
    Write-Host "Checking for modules and installing if necessary..." -ForegroundColor green
        [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
        $modulesArray = @(
            "PureStoragePowerShellSDK2",
            "ImportExcel"
        )
        ForEach ($mod in $modulesArray) {
            If (Get-Module -ListAvailable $mod) {
                Continue
            }
            Else {
                Install-Module $mod -Force -ErrorAction 'SilentlyContinue'
                Import-Module $mod -ErrorAction 'SilentlyContinue'
            }
        }
# Assign variables
$arrays = Get-Content -Path $arraylist
$date = (Get-Date).ToString("MMddyyyy_HHmmss")
# Run through each array
Write-Host "Starting to read from array..." -ForegroundColor green
foreach ($array in $arrays)
{
$flasharray = Connect-Pfa2Array -Endpoint $array -Credential $Creds -IgnoreCertificateError
$array_details = Get-Pfa2Array -Array $flasharray
$host_details =Get-Pfa2Host -Array $flasharray -Sort "name"
$hostgroup = Get-Pfa2HostGroup -Array $flasharray
$vol_details = Get-Pfa2Volume -Array $flasharray -Sort "name" -Filter "not(contains(name,'vvol'))"
$vvol_details = Get-Pfa2Volume -Array $flasharray -Sort "name" -Filter "contains(name,'vvol')"
$pgd = Get-Pfa2ProtectionGroup -Array $flasharray
$pgst = Get-Pfa2ProtectionGroupSnapshotTransfer -Array $flasharray -Sort "name"
$controller0_details =  Get-Pfa2Controller -Array $flasharray | Where-Object Name -eq CT0
$controller1_details =  Get-Pfa2Controller -Array $flasharray | Where-Object Name -eq CT1
$free = $array_details.capacity - $array_details.space.TotalPhysical
if($PSBoundParameters.ContainsKey('snapLimit')) {
    $snapshots = Get-Pfa2VolumeSnapshot -Array $FlashArray -Limit $snapLimit
}
else {
    $snapshots = Get-Pfa2VolumeSnapshot -Array $FlashArray
}
$pods = Get-Pfa2Pod -Array $FlashArray
Write-Host "Read complete. Disconnecting and continuing..." -ForegroundColor green
# Disconnect 'cause we don't need to waste the connection anymore
Disconnect-Pfa2Array -Array $flasharray

# Name and path the files
$wsname = $array_details.name
$excelFile = "$outPath\$wsname-$date.xlsx"
Write-Host "Writing data to Excel workbook..." -ForegroundColor green
# Array Information
[PSCustomObject]@{
"Array Name" = ($array_details.Name).ToUpper()
"Array ID" = $array_details.Id
"Purity Version" = $array_details.Version
"CT0-Mode" = $controller0_details.Mode
"CT0-Status" = $controller0_details.Status
"CT1-Mode" = $controller1_details.Mode
"CT1-Status" = $controller1_details.Status
"% Utilized" = "{0:P}" -f ($array_details.space.TotalPhysical / $array_details.capacity )
"Total Capacity(TB)" = [math]::round($array_details.Capacity/1024/1024/1024/1024,2)
"Used Capacity(TB)" = [math]::round($array_details.space.TotalPhysical/1024/1024/1024/1024,2)
"Free Capacity(TB)" = [math]::round($free/1024/1024/1024/1024,2)
"Provisioned Size(TB)" = [math]::round($array_details.space.TotalProvisioned/1024/1024/1024/1024,2)
"Unique Data(TB)" = [math]::round($array_details.space.Unique/1024/1024/1024/1024,2)
"Shared Data(TB)" = [math]::round($array_details.space.shared/1024/1024/1024/1024,2)
"Snapshot Capacity(TB)" = [math]::round($array_details.space.snapshots/1024/1024/1024/1024,2)
} | Export-Excel $excelFile -WorksheetName "Array_Info" -AutoSize -TableName "ArrayInformation" -Title "FlashArray Information"

## Volume Details
    $vol_details | Select-Object name,@{n='Size(GB)';e={[math]::round(($_.provisioned/1024/1024/1024),2)}},@{n='Unique Data(GB)';e={[math]::round(($_.space.Unique/1024/1024/1024),2)}},@{n='Shared Data(GB)';e={[math]::round(($_.space.Shared/1024/1024/1024),2)}},serial,ConnectionCount,Created,@{n='Volume Group';e={$_.VolumeGroup.Name}},Destroyed,TimeRemaining | Export-Excel $excelFile -WorksheetName "Volumes-No vVols" -AutoSize -ConditionalText $(New-ConditionalText Stop DarkRed LightPink) -TableName "VolumesNovVols" -Title "Volumes - Not including vVols"
## vVol Volume Details
if ($vvol_details) {
    $vvol_details | Select-Object name,@{n='Size(GB)';e={[math]::round(($_.provisioned/1024/1024/1024),2)}},@{n='Unique Data(GB)';e={[math]::round(($_.space.Unique/1024/1024/1024),2)}},@{n='Shared Data(GB)';e={[math]::round(($_.space.Shared/1024/1024/1024),2)}},serial,ConnectionCount,Created,@{n='Volume Group';e={$_.VolumeGroup.Name}},Destroyed,TimeRemaining | Export-Excel $excelFile -WorksheetName "vVol Volumes" -AutoSize -ConditionalText $(New-ConditionalText Stop DarkRed LightPink) -TableName "vVolVolumes" -Title "vVol Volumes"
}
else {
    Write-Host "No vVol Volumes exist on Array. Skipping."
}
## Volume Snapshot details
if ($snapshots) {
    $snapshots | Select-Object Name,Created,@{n='Provisioned(GB)';e={[math]::round(($_.Provisioned/1024/1024/1024),2)}},Destroyed,@{n='Source';e={$_.Source.Name}},@{n='Pod';e={$_.pod.name}},@{n='Volume Group';e={$_.VolumeGroup.Name}} | Export-Excel $excelFile -WorksheetName "Volume Snapshots" -AutoSize -TableName "VolumeSnapshots" -Title "Volume Snapshots"
}
else {
    Write-Host "No Volume Snapshots exist on Array. Skipping."
}
# Host Details
    $host_details | Select-Object Name,@{n='No. of Volumes';e={$_.ConnectionCount}},@{n='HostGroup';e={$_.HostGroup.Name}},Personality,@{n='Allocated(GB)';e={[math]::round(($_.space.totalprovisioned/1024/1024/1024),2)}},@{n='Wwns';e={$_.Wwns -join ',' }} | Export-Excel $excelFile -WorksheetName "Hosts" -AutoSize -TableName "Hosts" -Title "Host Information"
## HostGroup Details
if ($hostgroup) {
    $hostgroup | Select-Object Name,HostCount,@{n='No.of Volumes';e={$_.ConnectionCount}},@{n='Total Size(GB)';e={[math]::round(($_.space.totalprovisioned/1024/1024/1024),2)}} | Export-Excel $excelFile -WorksheetName "Host Groups" -AutoSize -TableName "HostGroups" -Title "Host Groups"
}
else {
    Write-Host "No Host Groups exist on Array. Skipping."
}
## Protection Group and Protection Group Transfer details
if ($pgd) {
    $pgd | select-object Name,@{n='Snapshot Size(GB)';e={[math]::round(($_.space.snapshots/1024/1024/1024),2)}},volumecount,@{n='Source';e={$_.source.name}} | Export-Excel $excelFile -WorksheetName "Protection Groups" -AutoSize -TableName "ProtectionGroups" -Title "Protection Group"
    $pgst | Select-Object Name,@{n='Data Transferred(MB)';e={[math]::round(($_.DataTransferred/1024/1024),2)}},Destroyed,@{n='Physical Bytes Written(MB)';e={[math]::round(($_.PhysicalBytesWritten/1024/1024),2)}},@{n="Status";e={$_.Progress -Replace("1","Transfer Complete")}}| Export-Excel $excelFile -WorksheetName "PG Snapshot Transfers" -AutoSize -TableName "PGroupSnapshotTransfers" -Title "Protection Group Snapshot Transfers"
}
else {
    Write-Host "No Protection Groups exist on Array. Skipping."
}
## Pod details
if ($pods) {
    $pods | Select-Object Name,arraycount,@{n='Source';e={$_.source.name}},mediator,promotionstatus,destroyed | Export-Excel $excelFile -WorksheetName "Pods" -AutoSize -TableName "Pods" -Title "Pod Information"
}
else {
    Write-Host "No Pods exist on Array. Skipping."
}
}
Write-Host "Complete. Files located in $outpath" -ForegroundColor green
}
#endregion

#region New-FlashArrayCapacityReport
function New-FlashArrayCapacityReport() {
    <#
    .SYNOPSIS
    Create a formatted report that contains FlashArray Capacity Information
    .DESCRIPTION
    This cmdlet will retrieve volume and snapshot capacity information from the FlashArray and output it to a formatted report.
    .PARAMETER EndPoint
    Required. FQDN or IP address of FlashArray.
    .PARAMETER OutFile
    Optional. Full folder path for output report. Default is the current %TEMP% folder.
    .PARAMETER HTMLFileName
    Optional. File name of output report. Default is Array_Capacity_Report.html.
    .PARAMETER VolumeFilter
    Optional. Specific volumes to filter output on. Wildcards are accepted. By default, this is "*" (all).
    .INPUTS
    None
    .OUTPUTS
    Formatted HTML report containing retrieved data and specified options.
    .EXAMPLE
    New-FlashArrayCapacityReport -EndPoint myArray

    Creates a capacity report named myArray_Capacity_Report.html in the current folder.

    .EXAMPLE
    New-FlashArrayCapacityReport -EndPoint myArray -OutFile C:\temp -HTMLFileName MyArrayReport.html -VolumeFilter 'Volume1*'.

    Creates a capacity report c:\temp\myArrayReport.html that includes volumes that contain the name 'Volume1*'.

    .NOTES
    This cmdlet can utilize the global $Creds variable for FlashArray authentication. Set the variable $Creds by using the command $Creds = Get-Credential.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Position = 0, Mandatory = $True)][ValidateNotNullOrEmpty()][string] $EndPoint,
        [Parameter(Mandatory = $False)][string] $OutFile = "$env:Temp",
        [Parameter(Mandatory = $False)][string] $HTMLFileName = "Array_Capacity_Report.html",
        [Parameter(Mandatory = $False)][string] $VolumeFilter = "*"
    )

    # define variables
    $ReportDateTime = Get-Date -Format d
    $metadata = [PSCustomObject]@{
        ReportDate = Get-Date -Format g
        Source = $env:COMPUTERNAME
        ScriptPath = $($myInvocation.mycommand).path
        ScriptVersion = "2.0.0.0"
        CreatedBy = "$env:USERNAME"
    }

    Get-Sdk1Module

    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    # populate variables
    $FlashArraySpaceMetrics = Get-PfaArraySpaceMetrics -Array $FlashArray
    $FlashArrayConfig = Get-PfaArrayAttributes -Array $FlashArray
    $FlashArraySnapshots = Get-PfaAllVolumeSnapshots -Array $FlashArray

    $sysCapacity = Convert-Size -ConvertFrom Bytes -ConvertTo TB $FlashArraySpaceMetrics.capacity -Precision 2
    $sysSnapshotSpace = Convert-Size -ConvertFrom Bytes -ConvertTo MB $FlashArraySpaceMetrics.snapshots -Precision 4
    $sysVolumeSpace = Convert-Size -ConvertFrom Bytes -ConvertTo GB $FlashArraySpaceMetrics.volumes -Precision 2
    $sysDRR = [system.Math]::Round($FlashArraySpaceMetrics.data_reduction, 1)
    $sysSpace = Convert-Size -ConvertFrom Bytes -ConvertTo GB $FlashArraySpaceMetrics.total -Precision 2
    $sysSharedSpace = Convert-Size -ConvertFrom Bytes -ConvertTo GB $FlashArraySpaceMetrics.shared_space -Precision 0
    $sysTP = Convert-Size -ConvertFrom Bytes -ConvertTo GB $FlashArraySpaceMetrics.thin_provisioning -Precision 2
    if ([system.Math]::Round($FlashArraySpaceMetrics.total_reduction, 1) -gt 100) {
        $sysTotalDRR = ">100:1"
    }
    else {
        $sysTotalDRR = ([system.Math]::Round($FlashArraySpaceMetrics.total_reduction, 1)).toString() + ":1"
    }

    # zero out varables
    $volumeInfo = $null
    $provisioned = 0

    $volumes = Get-PfaVolumes -Array $FlashArray | Where-Object { $_.name -like $VolumeFilter }
    $volumeInfo += "<th>Volume Name</th><th>Volume Size (GB)</th><th>Connection</th><th><center>Protected</center></th><th>DR</th><th>SS</th><th>TP</th><th>WS (GB)</th>"

    ForEach ($volume in $volumes) {
        $printVol = $volume.name
        $volSize = ($volume.size) / 1GB
        $provisioned = (Convert-Size -ConvertFrom GB -ConvertTo TB $volSize -Precision 4) + $provisioned
        $dr = Get-PfaVolumeSpaceMetrics -Array $FlashArray -VolumeName $volume.name
        $datardx = "{0:N2}" -f $dr.data_reduction
        $dataTP = "{0:N3}" -f $dr.thin_provisioning
        $WrittenSpace = "{0:N2}" -f (((1 - $dr.thin_provisioning) * $dr.total) / 1024 / 1024 / 1024)
        if ($dr.shared_space) {
            $dataSS = "{0:N2}" -f $dr.shared_space
        }
        else {
            $dataSS = "None"
        }

        # Does the volume have any snapshots?
        if (!(Get-PfaVolumeSnapshots -Array $FlashArray -VolumeName $volume.name)) {
            $protected = "No"
        }
        else {
            $protected = "Yes"
        }

        if (!(Get-PfaVolumeHostConnections -Array $FlashArray -VolumeName $volume.name).host) {
            if (!(Get-PfaVolumeHostGroupConnections -Array $FlashArray -VolumeName $volume.name).hgroup) {
                $hostconnname = "Not Connected"
            }
            else {
                if (((Get-PfaVolumeHostGroupConnections -Array $FlashArray -VolumeName $volume.name).hgroup).Count -gt 1) {
                    $hostconnname = (Get-PfaVolumeHostGroupConnections -Array $FlashArray -VolumeName $volume.name).hgroup[0]
                }
                else {
                    $hostconnname = (Get-PfaVolumeHostGroupConnections -Array $FlashArray -VolumeName $volume.name).hgroup
                }
            }
        }
        else {
            $hostconnname = (Get-PfaVolumeHostConnections -Array $FlashArray -VolumeName $volume.name).host
        }
        $volumeInfo += "<tr><td>$("{0:N0}" -f $printVol)</td> <td>$("{0:N0}" -f $volSize)</td><td>$($hostconnname)</td><td><center>$protected</center></td><td>$($datardx)</td><td>$($dataSS)</td><td>$($dataTP)</td><td>$($WrittenSpace)</td></tr>"
    }

    $snapshotInfo = $null
    $snapshots = Get-PfaVolumes -Array $FlashArray | Where-Object { $_.name -like $VolumeFilter }
    $snapshotInfo += "<th>Snapshot Name</th><th>Snapshot Size (GB)</th>"
    ForEach ($snapshot in $snapshots) {
        $printSnapshot = $snapshot.name
        $snapshotSize = ($snapshot.size) / 1GB
        $snapshotInfo += "<tr><td>$("{0:N0}" -f $printSnapshot)</td> <td>$("{0:N0}" -f $snapshotSize)</td></tr>"
    }

    # Create HTML/CSS report format
    #region HTML
    $HTMLHeader = @"
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">
<html>
<head>
<!--
$(($metadata | Out-String).Trim())
-->
<title>Pure Storage FlashArray Capacity Report</title>
<style type="text/css">
<!--
body {
    font-family: Proxima Nova, Verdana, Geneva, Arial, Helvetica, Sans-Serif;
}
table {
	border-collapse: collapse;
	border: none;
	border-right: 1px grey solid;
    border-top: 1px grey solid;
    border-bottom: 1px grey solid;
    border-left: 1px grey solid;
	text-align: left;
	font: 12pt Proxima Nova, Verdana, Geneva, Arial, Helvetica, Sans-Serif;
	color: black;
	margin-bottom: 10px;
    margin-left: 20px;
}

table td {
    vertical-align: top;
	font-size: 12px;
	padding-left: 2px;
	padding-right: 2px;
	text-align: left;
	border-right: 1px grey solid;
    border-top: 1px grey solid;
    border-bottom: 1px grey solid;
    border-left: 1px grey solid;
}

table th {
	font-size: 14px;
	font-weight: bold;
	padding-left: 2px;
	padding-right: 2px;
	text-align: left;
	border-right: 1px grey solid;
    border-top: 1px grey solid;
    border-bottom: 1px grey solid;
    border-left: 1px grey solid;
}

h2 {
    clear: both;
    font-size: 130%;
}

h3 {
	clear: both;
	font-size: 115%;
	margin-left: 20px;
	margin-top: 30px;
}

protected {
    font-weight: bold;
	text-align: left;
}

p {
    margin-left: 20px;
    font-size: 12px;
}

hr {
    background-color: #FE5000
}

table.list {
	font-size: 12px;
	font-weight: normal;
	padding-left: 2px;
	padding-right: 2px;
	text-align: right;
    border-style: solid;
    width: 700px;
}

table.list td:nth-child(1) {
	font-weight: bold;
	border-right: 1px grey solid;
	text-align: left;
}

table.list td:nth-child(2) {
    padding-left: 2px;
	border-right: 1px grey solid;
	text-align: left;
}

table tr:nth-child(even) td:nth-child(even) {
    background: #F8D2CD;
}

table tr:nth-child(odd) td:nth-child(odd) {
    background: #FCEAE8;
}

table tr:nth-child(even) td:nth-child(odd) {
    background: #F8D2CD;
}

table tr:nth-child(odd) td:nth-child(even) {
    background: #FCEAE8;
}

div.column {
    width: 400px;
    float: left;
}

div.first {
    padding-right: 2px;
    border-right: 1px grey solid;
}

div.second {
    margin-left: 30px;
}

div.relative {
    position: relative;
}

div.absolute {
    position: absolute;
    top: 80px;
    left: 350px;
    width: 200px;
    height: 75px;
	font-size: 14px;
	font-weight: bold;
}

div.time {
    position: absolute;
    top: 25px;
    left: 0px;
    width: 600px;
    height: 75px;
	font-size: 12px;
	font-weight: normal;
}

img {
    max-width: 500px;
    max-height: 88px;
}
-->
</style>
</head>
<body>
"@

$CurrentSystemHTML = @"
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MJorji7SzfLj8C0vJ6u0FgYAAAAAAAAAAID2SRjl0bZVquqPX+otf0oe5WubySo9FwYAAAAAAAAAAID2
SRjlIErl0Zw4+nO9zUWE4nSySlfCAAAAAAAAAAAA0C4JozRiW+2SRvP2U71N6+1IVEbpc709n6x2nwAA
AAAAAAAAALREwihhShXSvHT9vPyrf6ebZFKG7f1klZbCAAAAAAAAAAAA0B4JoyOwrXZJmpf1thANDkwF
UQAAAAAAAAAAgB6YCMEIDvIqfa634/qPF6LBgeVk5BNhAAAAAAAAAAAA6Lb/X4ABALB1eFG6MQyjAAAA
AElFTkSuQmCC">

<div id="report">
<p><div class='absolute'>FlashArray Capacity Report<br><div class='time'>$(Get-Date -Format U)</div></div>
<h3>FlashArray Information</h3>
<table class="list">
<tr>
<td>FlashArray Name</td>
<td>$($FlashArrayConfig.array_name)</td>
</tr>
<tr>
<td>Purity Version</td>
<td>$($FlashArrayConfig.version)</td>
</tr>
<tr>
<td>Revision</td>
<td>$($FlashArrayConfig.revision)</td>
</tr>
<tr>
<td>ID</td>
<td>$($FlashArrayConfig.id)</td>
</tr>
<tr>
<td>Total Volumes Space</td>
<td>$sysVolumeSpace G</td>
</tr>
<tr>
<td>Total Snapshots Space</td>
<td>$("{0:N2}" -f $sysSnapshotSpace) M</td>
</tr>
<tr>
<td>Shared Space</td>
<td>$("{0:N2}" -f $sysSharedSpace) G</td>
</tr>
<tr>
<td>Used Space</td>
<td>$("{0:N2}" -f $sysSpace) G</td>
</tr>
<tr>
<td>System Capacity</td>
<td>$("{0:N2}" -f $sysCapacity) T</td>
</tr>
<tr>
<td>System Data Reduction</td>
<td>$("{0:N2}" -f $sysDRR):1</td>
</tr>
<tr>
<td>Total Data Reduction</td>
<td>$($sysTotalDRR)</td>
</tr>
<tr>
<td>Provisioned Space</td>
<td> $("{0:N2}" -f $provisioned) T</td>
</tr>
</table>
<h3>Volume Information</h3>
<p>Volumes(s), Sizes (GB) and Data Reduction columes include DR (Data Reduction), SS (Shared Space)<br>and TP (Thin Provisioning) and WS (Written Space) for $($FlashArrayConfig.array_name) listed below.</p>
<table class="list">$volumeInfo</table>
<h3>FlashRecover SnapShot Information</h3>
<p>Snapshot(s) and Sizes (GB) for $($FlashArrayConfig.array_name) listed below.</p>
<table class="list">$snapshotInfo</table>
<br></br>
"@
    # Add the current System HTML Report into the final HTML Report body
    $HTMLMiddle += $CurrentSystemHTML

    # Assemble the closing HTML for our report.
    $HTMLEnd = @"
</div>
<hr noshade size=3 width="100%">
$ReportDateTime
</body>
</html>
"@
    # Assemble the final report from all our HTML sections
    $HTMLmessage = $HTMLHeader + $HTMLMiddle + $HTMLEnd
    # Save the report out to a file in the current path$
    $HTMLmessage | Out-File ($OutFile + "\" + $HTMLFileName)

    Write-Host " "
    Write-Host "The report file is located in the $OutFile folder." -ForegroundColor Green
}
#endregion

#### END FLASHARRAY FUNCTIONS

#### WINDOWS FUNCTIONS

#region Test-WindowsBestPractices
function Test-WindowsBestPractices() {
    <#
    .SYNOPSIS
    Cmdlet used to retrieve hosts information, test and optionally configure MPIO (FC) and/or iSCSI settings in a Windows OS against FlashArray Best Practices.
    .DESCRIPTION
    This cmdlet will retrieve the curretn host infromation, and iterate through several tests around MPIO (FC) and iSCSI OS settings and hardware, indicate whether they are adhearing to Pure Storage FlashArray Best Practices, and offer to alter the settings if applicable.
    All tests can be bypassed with a negative user response when prompted, or simply by using Ctrl-C to break the process.
    .PARAMETER EnableIscsiTests
    Optional. If this parameter is present, the cmdlet will run tests for iSCSI settings.
    .PARAMETER OutFile
    Optional. Specify the full filepath (ex. c:\mylog.log) for logging. If not specified, the default file of %TMP%\Test-WindowsBestPractices.log will be used.
    .INPUTS
    Optional parameter for iSCSI testing.
    .OUTPUTS
    Output status and best practice options for every test.
    .EXAMPLE
    Test-WindowsBestPractices

    Run the cmdlet against the local machine running the MPIO tests and the log is located in the %TMP%\Test-WindowsBestPractices.log file.

    .EXAMPLE
    Test-WindowsZBestPractices -EnableIscsiTests -OutFile "c:\temp\mylog.log"

    Run the cmdlet against the local machine, run the additional iSCSI tests, and create the log file at c:\temp\mylog.log.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $false)] [string] $OutFile = "$env:Temp\Test-WindowsBestPractices.log",
        [Switch]$EnableIscsiTests
    )
    function Write-Log {
        [CmdletBinding()]
        param(
            [Parameter()][ValidateNotNullOrEmpty()][string]$Message,
            [Parameter()][ValidateNotNullOrEmpty()][ValidateSet("Information", "Passed", "Warning", "Failed")][string]$Severity = "Information"
        )
        [pscustomobject]@{
            Time     = (Get-Date -f g)
            Message  = $Message
            Severity = $Severity
        } | Out-File -FilePath $OutFile -Append
    }
    Write-Log -Message 'Pure Storage FlashArray Windows Server Best Practices Analyzer v2.0.0.0' -Severity Information
    Clear-Host
    Write-Host '             __________________________'
    Write-Host '            /++++++++++++++++++++++++++\'
    Write-Host '           /++++++++++++++++++++++++++++\'
    Write-Host '          /++++++++++++++++++++++++++++++\'
    Write-Host '         /++++++++++++++++++++++++++++++++\'
    Write-Host '        /++++++++++++++++++++++++++++++++++\'
    Write-Host '       /++++++++++++/----------\++++++++++++\'
    Write-Host '      /++++++++++++/            \++++++++++++\'
    Write-Host '     /++++++++++++/              \++++++++++++\'
    Write-Host '    /++++++++++++/                \++++++++++++\'
    Write-Host '   /++++++++++++/                  \++++++++++++\'
    Write-Host '   \++++++++++++\                  /++++++++++++/'
    Write-Host '    \++++++++++++\                /++++++++++++/'
    Write-Host '     \++++++++++++\              /++++++++++++/'
    Write-Host '      \++++++++++++\            /++++++++++++/'
    Write-Host '       \++++++++++++\          /++++++++++++/'
    Write-Host '        \++++++++++++\'
    Write-Host '         \++++++++++++\'
    Write-Host '          \++++++++++++\'
    Write-Host '           \++++++++++++\'
    Write-Host '            \------------\'
    Write-Host 'Pure Storage FlashArray Windows Server Best Practices Analyzer v2.0.0.0'
    Write-Host '------------------------------------------------------------------------'
    Write-Host ''
    Write-Host ''
    Write-Host '========================================='
    Write-Host 'Host Information'
    Write-Host '========================================='
    $compinfo = Get-SilComputer | Out-String -Stream
    $compinfo | Out-File -FilePath $OutFile -Append
    $compinfo
    Write-Log -Message "Successfully retrieved computer properties. Continuing..." -Severity Information
    Write-Host ''
    Write-Host '========================================='
    Write-Host 'Multipath-IO Verificaton'
    Write-Host '========================================='
    # Multipath-IO
    if ((Get-WindowsFeature -Name 'Multipath-IO').InstallState -eq 'Available') {
        Write-Host "FAILED" -ForegroundColor Red -NoNewline
        Write-Host ": Multipath-IO Windows feature is not installed. This feature can be installed by this cmdlet, but a reboot of the server will be required, and the you must re-run the cmdlet again."
        Write-Log -Message 'Multipath-IO Windows feature is not installed.' -Severity Failed
        $resp = Read-Host "Would you like to install this feature? (***Reboot Required) Y/N"
        if ($resp.ToUpper() -eq 'Y') {
            Add-WindowsFeature -Name Multipath-IO
            Write-Log -Message 'Multipath-IO Windows feature was installed per user request. Continuing...' -Severity Passed
        }
        else {
            Write-Host "WARNING" -ForegroundColor Yellow -NoNewline
            Write-Host ": You have chosen not to install the Multipath-IO feature via this cmdlet. Please add this feature manually and re-run this cmdlet."
            Write-Log -Message 'Multipath-IO Windows feature not installed per user request. Exiting.' -Severity Warning
            exit
        }
    }
    else {
        Write-Host "PASSED" -ForegroundColor Green -NoNewline
        Write-Host ": The Multipath-IO feature is installed."
        Write-Log -Message 'Multipath-IO Windows feature is installed. Continuing...' -Severity Passed
    }

    Write-Host ''
    Write-Host '========================================='
    Write-Host 'Multipath-IO Hardware Verification'
    Write-Host '========================================='
    $MPIOHardware = Get-MPIOAvailableHW
    $MPIOHardware | Out-File -FilePath $OutFile -Append
    Write-Log -Message "Successfully retrieved MPIO Hardware. Continuing..." -Severity Information
    $MPIOHardware
    $DSMs = Get-MPIOAvailableHW
    ForEach ($DSM in $DSMs) {
        if ((($DSM).VendorId.Trim()) -eq 'PURE' -and (($DSM).ProductId.Trim()) -eq 'FlashArray') {
            Write-Host "PASSED" -ForegroundColor Green -NoNewline
            Write-Host ": Microsoft Device Specific Module (MSDSM) is configured for $($DSM.ProductID).`n`r"
            Write-Log -Message "Microsoft Device Specific Module (MSDSM) is configured for $($DSM.ProductID).`n`r. Continuing..." -Severity Passed
        }
        else {
            Write-Host "FAILED" -ForegroundColor Red -NoNewline
            Write-Host ": Microsoft Device Specific Module (MSDSM) is not configured for $($DSM.ProductID).`n`r"
            Write-Log -Message "Microsoft Device Specific Module (MSDSM) is not configured for $($DSM.ProductID).`n`r. Continuing anyway..." -Severity Failed
        }
    }

    Write-Host ''
    Write-Host '-----------------------------------------'
    Write-Host 'Current MPIO Settings'
    Write-Host '-----------------------------------------'

    $MPIOSettings = $null
    $MPIOSetting = $null
    Write-Log -Message "Retrieving MPIO settings. Continuing..." -Severity Information
    $MPIOSettings = Get-MPIOSetting | Out-String -Stream
    $MPIOSettings = $MPIOSettings.Replace(" ", "")
    $MPIOSettings | Out-Null
    $MPIOSettings | Out-File -FilePath $OutFile -Append
    Write-Log -Message "Successfully retrieved MPIO Settings. Continuing..." -Severity Information

    ForEach ($MPIOSetting in $MPIOSettings) {
        $MPIOSetting.Split(':')[0]
        $MPIOSetting.Split(':')[1]
        switch ( $($MPIOSetting.Split(':')[0])) {
            'PathVerificationState' { $PathVerificationState = $($MPIOSetting.Split(':')[1]) }
            'PDORemovePeriod' { $PDORemovePeriod = $($MPIOSetting.Split(':')[1]) }
            'UseCustomPathRecoveryTime' { $UseCustomPathRecoveryTime = $($MPIOSetting.Split(':')[1]) }
            'CustomPathRecoveryTime' { $CustomPathRecoveryTime = $($MPIOSetting.Split(':')[1]) }
            'DiskTimeoutValue' { $DiskTimeOutValue = $($MPIOSetting.Split(':')[1]) }
        }
    }

    Write-Host ''
    Write-Host '========================================='
    Write-Host 'MPIO Settings Verification'
    Write-Host '========================================='

    # PathVerificationState
    if ($PathVerificationState -eq 'Disabled') {
        Write-Host "FAILED" -ForegroundColor Red -NoNewline
        Write-Host ": PathVerificationState is $($PathVerificationState)."
        Write-Log -Message "PathVerificationState is $($PathVerificationState)." -Severity Failed
        $resp = Read-Host "REQUIRED ACTION: Set the PathVerificationState to Enabled? Y/N"
        if ($resp.ToUpper() -eq 'Y') {
            Set-MPIOSetting -NewPathVerificationState Enabled
            Write-Log -Message "PathVerificationState is now $($PathVerificationState) per to user request." -Severity Information
        }
        else {
            Write-Host "WARNING" -ForegroundColor Yellow
            Write-Host ": Not changing the PathVerificationState to Enabled could cause unexpected path recovery issues."
            Write-Log -Message "PathVerificationState $($PathVerificationState) was not altered due to user request." -Severity Warning
        }
    }
    else {
        Write-Host "PASSED" -ForegroundColor Green -NoNewline
        Write-Host ": PathVerificationState has a value of Enabled. No action required."
        Write-Log -Message "PathVerificationState has a value of Enabled. No action required." -Severity Passed
    }

    # PDORemovalPeriod
    # Need to test for Azure VM. If Azure VM, use PDORemovalPeriod=120. If not Azure VM, use PDORemovePeriod=30.
    try {
        $StatusCode = wget -TimeoutSec 3 -Headers @{"Metadata" = "true" } -Uri "http://169.254.169.254/metadata/instance/compute?api-version=2021-01-01" | ForEach-Object { $_.StatusCode }
    }
    catch {}
    if ($StatusCode -eq '200') {
        $b = Invoke-RestMethod -Headers @{"Metadata" = "true" } -Method GET -Proxy $Null -Uri "http://169.254.169.254/metadata/instance/compute?api-version=2021-01-01&format=json" | Select-Object azEnvironment
        if ($b.azEnvironment -like "Azure*") {
            Write-Log -Message "This is an Azure Vitual Machine. The PDORemovalPeriod is set differently than others." -Severity Information
            if ($PDORemovePeriod -ne '120') {
                Write-Host "FAILED" -ForegroundColor Red -NoNewline
                Write-Host ": PDORemovePeriod for this Azure VM is set to $($PDORemovePeriod)."
                Write-Log -Message "PDORemovePeriod for this Azure VM is set to $($PDORemovePeriod)." -Severity Failed
                $resp = Read-Host "REQUIRED ACTION: Set the PDORemovePeriod to a value of 120? Y/N"
                if ($resp.ToUpper() -eq 'Y') {
                    Set-MPIOSetting -NewPDORemovePeriod 120
                    Write-Log -Message ": PDORemovePeriod for this Azure VM is set to $($PDORemovePeriod) per user request." -Severity Information
                }
                else {
                    Write-Host "WARNING" -ForegroundColor Yellow -NoNewline
                    Write-Host ": Not changing the PDORemovePeriod to 120 for an Azure VM could cause unexpected path recovery issues."
                    Write-Log -Message "Not changing the PDORemovePeriod to 120 for an Azure VM could cause unexpected path recovery issues." -Severity Warning
                }
                else {
                    Write-Host "PASSED" -ForegroundColor Green -NoNewline
                    Write-Host ": PDORemovePeriod is set to a value of 120 for this Azure VM. No action required."
                    Write-Log -Message "PDORemovePeriod is set to a value of 120 for this Azure VM. No action required." -Severity Passed
                }
            }
        }
        else {
            if ($PDORemovePeriod -ne '30') {
                Write-Host "FAILED" -ForegroundColor Red -NoNewline
                Write-Host ": PDORemovePeriod is set to $($PDORemovePeriod)."
                Write-Log -Message "PDORemovePeriod is set to $($PDORemovePeriod)." -Severity Failed
                $resp = Read-Host "REQUIRED ACTION: Set the PDORemovePeriod to a value of 30? Y/N"
                if ($resp.ToUpper() -eq 'Y') {
                    Set-MPIOSetting -NewPDORemovePeriod 30
                    Write-Log -Message "PDORemovePeriod is set to $($PDORemovePeriod) per user request." -Severity Information
                }
                else {
                    Write-Host "WARNING" -ForegroundColor Yellow -NoNewline
                    Write-Host ": Not changing the PDORemovePeriod to 30 could cause unexpected path recovery issues."
                    Write-Log -Message "Not changing the PDORemovePeriod to 30 could cause unexpected path recovery issues." -Severity Warning
                }
                else {
                    Write-Host "PASSED" -ForegroundColor Green -NoNewline
                    Write-Host ": PDORemovePeriod is set to a value of 30. No action required."
                    Write-Log -Message "PDORemovePeriod is set to a value of 30. No action required." -Severity Passed
                }
            }
        }
    }
    # PathRecoveryTime
    if ($UseCustomPathRecoveryTime -eq 'Disabled') {
        Write-Host "FAILED" -ForegroundColor Red -NoNewline
        Write-Host ": UseCustomPathRecoveryTime is set to $($UseCustomPathRecoveryTime)."
        Write-Log -Message "UseCustomPathRecoveryTime is set to $($UseCustomPathRecoveryTime)." -Severity Failed
        $resp = Read-Host "REQUIRED ACTION: Set the UseCustomPathRecoveryTime to Enabled? Y/N"
        if ($resp.ToUpper() -eq 'Y') {
            Set-MPIOSetting -CustomPathRecovery Enabled
            Write-Log -Message "UseCustomPathRecoveryTime is set to $($UseCustomPathRecoveryTime) per user request." -Severity Information
        }
        else {
            Write-Host "WARNING" -ForegroundColor Yellow
            Write-Host ": Not changing the UseCustomPathRecoveryTime to Enabled could cause unexpected path recovery issues."
            Write-Log -Message "Not changing the UseCustomPathRecoveryTime to Enabled could cause unexpected path recovery issues." -Severity Warning
        }
    }
    else {
        Write-Host "PASSED" -ForegroundColor Green -NoNewline
        Write-Host ": UseCustomPathRecoveryTime is set to Enabled. No action required."
        Write-Log -Message "UseCustomPathRecoveryTime is set to Enabled. No action required." -Severity Passed
    }

    if ($CustomPathRecoveryTime -ne '20') {
        Write-Host "FAILED" -ForegroundColor Red -NoNewline
        Write-Host ": CustomPathRecoveryTime is set to $($CustomPathRecoveryTime)."
        Write-Log -Message "CustomPathRecoveryTime is set to $($CustomPathRecoveryTime)." -Severity Failed
        $resp = Read-Host "REQUIRED ACTION: Set the CustomPathRecoveryTime to a value of 20? Y/N"
        if ($resp.ToUpper() -eq 'Y') {
            Set-MPIOSetting -NewPathRecoveryInterval 20
            Write-Log -Message "CustomPathRecoveryTime is set to $($UseCustomPathRecoveryTime) per user request." -Severity Information
        }
        else {
            Write-Host "WARNING" -ForegroundColor Yellow
            Write-Host ": Not changing the CustomPathRecoveryTime to a value of 20 could cause unexpected path recovery issues."
            Write-Log -Message "Not changing the CustomPathRecoveryTime to a value of 20 could cause unexpected path recovery issues." -Severity Warning
        }
    }
    else {
        Write-Host "PASSED" -ForegroundColor Green -NoNewline
        Write-Host ": CustomPathRecoveryTime is set to $($CustomPathRecoveryTime). No action required."
        Write-Log -Message "CustomPathRecoveryTime is set to $($CustomPathRecoveryTime). No action required." -Severity Passed
    }

    # DiskTimeOutValue
    if ($DiskTimeOutValue -ne '60') {
        Write-Host "FAILED" -ForegroundColor Red -NoNewline
        Write-Host ": DiskTimeOutValue is set to $($DiskTimeOutValue)."
        Write-Log -Message "DiskTimeOutValue is set to $($DiskTimeOutValue)." -Severity Failed
        $resp = Read-Host "REQUIRED ACTION: Set the DiskTimeOutValue to a value of 60? Y/N"
        if ($resp.ToUpper() -eq 'Y') {
            Set-MPIOSetting -NewDiskTimeout 60
            Write-Log -Message "DiskTimeOutValue is set to $($DiskTimeOutValue) per user request." -Severity Information
        }
        else {
            Write-Host "WARNING" -ForegroundColor Yellow
            Write-Host ": Not changing the DiskTimeOutValue to a value of 60 could cause unexpected path recovery issues."
            Write-Log -Message "Not changing the DiskTimeOutValue to a value of 60 could cause unexpected path recovery issues." -Severity Warning
        }
    }
    else {
        Write-Host "PASSED" -ForegroundColor Green -NoNewline
        Write-Host ": DiskTimeOutValue is set to $($DiskTimeOutValue). No action required."
        Write-Log -Message "DiskTimeOutValue is set to $($DiskTimeOutValue). No action required." -Severity Passed
    }

    Write-Host ''
    Write-Host '========================================='
    Write-Host 'TRIM/UNMAP Verification'
    Write-Host '========================================='
    # DisableDeleteNotification
    $DisableDeleteNotification = (Get-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Control\FileSystem' -Name 'DisableDeleteNotification')
    if ($DisableDeleteNotification.DisableDeleteNotification -eq 0) {
        Write-Host "PASSED" -ForegroundColor Green -NoNewline
        Write-Host ": Delete Notification is Enabled"
        Write-Log -Message "Delete Notification is Enabled. No action required." -Severity Passed
    }
    else {
        Write-Host "WARNING" -ForegroundColor Yellow -NoNewline
        Write-Host ": Delete Notification is Disabled. Pure Storage Best Practice is to enable delete notifications."
        Write-Log -Message "Delete Notification is Disabled. Pure Storage Best Practice is to enable delete notifications." -Severity Warning
    }
    Write-Host " "
    Write-Host "MPIO settings tests complete. Continuing..." -ForegroundColor Green
    Write-Log -Message "MPIO settings tests complete. Continuing..." -Severity Information
    # iSCSI tests
    if ($EnableIscsiTests) {
        Write-Host ''
        Write-Host '========================================='
        Write-Host 'iSCSI Settings Verification'
        Write-Host '========================================='
        Write-Log -Message "iSCSI testing enabled. Continuing..." -Severity Information
        $AdapterNames = @()
        Write-Host "All available adapters: "
        Write-Host " "
        $adapters = Get-NetAdapter | Sort-Object Name | Format-Table -Property "Name", "InterfaceDescription", "MacAddress", "Status"
        $adapters | Out-File -FilePath $OutFile -Append
        $adapters
        Write-Host " "
        $AdapterNames = Read-Host "Please enter all iSCSI adapter names to be tested. Use a comma to seperate the names - ie. NIC1,NIC2,NIC3"
        $AdapterNames = $AdapterNames.Split(',')
        Write-Host " "
        Write-Host "Adapter names being configured: "
        $AdapterNames
        Write-Host "==============================="
        foreach ($adapter in $AdapterNames) {
            $adapterGuid = (Get-NetAdapterAdvancedProperty -Name $adapter -RegistryKeyword "NetCfgInstanceId" -AllProperties).RegistryValue
            $RegKeyPath = "HKLM:\system\currentcontrolset\services\tcpip\parameters\interfaces\$adapterGuid\"
            $TAFRegKey = "TcpAckFrequency"
            $TNDRegKey = "TcpNoDelay"
            ## TcpAckFrequency
            if ((Get-ItemProperty $RegkeyPath).$TAFRegKey -eq "1") {
                Write-Host "PASSED" -ForegroundColor Green -NoNewline
                Write-Host ": TcpAckFrequency is set to disabled (1). No action required."
                Write-Log -Message "TcpAckFrequency is set to disabled (1). No action required." -Severity Passed
            }
            if (-not (Get-ItemProperty $RegkeyPath $TAFRegKey -ErrorAction SilentlyContinue)) {
                Write-Host "FAILED" -ForegroundColor Red -NoNewline
                Write-Host ": TcpAckFrequency key does not exist."
                Write-Log -Message "TcpAckFrequency key does not exist." -Severity Failed
                Write-Host "REQUIRED ACTION: Set the TcpAckFrequency registry value to 1 for $adapter ?" -NoNewline
                $resp = Read-Host -Prompt "Y/N?"
                if ($resp.ToUpper() -eq 'Y') {
                    Write-Host "Creating Registry key and setting to disabled..."
                    New-ItemProperty -Path $RegKeyPath -Name 'TcpAckFrequency' -Value '1' -PropertyType DWORD -Force -ErrorAction SilentlyContinue
                    Write-Log -Message "Creating Registry key and setting to disabled per user request." -Severity Information
                }
                else {
                    Write-Host "WARNING" -ForegroundColor Yellow -NoNewline
                    Write-Host ": TcpAckFrequency registry key exists but is enabled. Changing to disabled."
                    Set-ItemProperty -Path $RegKeyPath -Name 'TcpAckFrequency' -Value '1' -Type DWORD -Force -ErrorAction SilentlyContinue
                    Write-Log -Message "TcpAckFrequency registry key exists but is enabled. Changing to disabled." -Severity Warning
                }
            }
            if ($resp.ToUpper() -eq 'N') {
                Write-Host "ABORTED" -ForegroundColor Yellow -NoNewline
                Write-Host ": Registry key not created or altered by request of user."
                Write-Log -Message "Registry key not created or altered by request of user." -Severity Warning

            }
            ## TcpNoDelay
            if ((Get-ItemProperty $RegkeyPath).$TNDRegKey -eq "1") {
                Write-Host "PASSED" -ForegroundColor Green -NoNewline
                Write-Host ": TcpNoDelay (Nagle) is set to disabled (1). No action required."
                Write-Log -Message "TcpNoDelay (Nagle) is set to disabled (1). No action required." -Severity Passed
            }
            if (-not (Get-ItemProperty $RegkeyPath $TNDRegKey -ErrorAction SilentlyContinue)) {
                Write-Host "REQUIRED ACTION: Set the TcpNodelay (Nagle) registry value to 1 for $adapter ?" -NoNewline
                $resp = Read-Host -Prompt "Y/N?"
                if ($resp.ToUpper() -eq 'Y') {
                    Write-Host "TcpNoDelay registry key does not exist. Creating..."
                    New-ItemProperty -Path $RegKeyPath -Name 'TcpNoDelay' -Value '1' -PropertyType DWORD -Force -ErrorAction SilentlyContinue
                    Write-Log -Message "TcpNoDelay registry key does not exist. Creating per user request." -Severity Information
                }
                else {
                    Write-Host "WARNING" -ForegroundColor Yellow -NoNewline
                    Write-Host ": TcpNoDelay registry key exists. Setting value to 1."
                    Set-ItemProperty -Path $RegKeyPath -Name 'TcpNoDelay' -Value '1' -Type DWORD -Force -ErrorAction SilentlyContinue
                    Write-Log -Message "TcpNoDelay registry key exists. Setting value to 1." -Severity Warning
                }
            }
            if ($resp.ToUpper() -eq 'N') {
                Write-Host "ABORTED" -ForegroundColor Yellow -NoNewline
                Write-Host ": TcpNoDelay registry key not created or altered by request of user."
                Write-Log -Message "TcpNoDelay registry key not created or altered by request of user." -Severity Warning
            }
        }
    }
    else {
        Write-host " "
        Write-Host "The -EnableIscsiTests parameter not present. No iSCSI tests will be run." -ForegroundColor Yellow
        Write-Host " "
        Write-Log -Message "The -EnableIscsiTests parameter not present. No iSCSI tests will be run." -Severity Information
    }
    Write-Host ''
    Write-Host "The Test-WindowsBestPractices cmdlet has completed. The log file has been created for reference." -ForegroundColor Green
    Write-Host ''
    Write-Log -Message "The Test-WindowsBestPractices cmdlet has completed." -Severity Information
}
#endregion

#region Set-WindowsPowerScheme
function Set-WindowsPowerScheme() {
    <#
    .SYNOPSIS
    Cmdlet to set the Power scheme for the Windows OS to High Performance.
    .DESCRIPTION
    Cmdlet to set the Power scheme for the Windows OS to High Performance.
    .PARAMETER ComputerName
    Optional. The computer name to run the cmdlet against. It defaults to the local computer name.
    .INPUTS
    None
    .OUTPUTS
    Current power scheme and optional confirmation to alter the setting in the Windows registry.
    .EXAMPLE
    Set-WindowsPowerScheme

    Retrieves the current Power Scheme setting, and if not set to High Performance, asks for confirmation to set it.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $False)] [string] $ComputerName = "$env:COMPUTERNAME"
    )
    $PowerScheme = Get-WmiObject -Class WIN32_PowerPlan -Namespace 'root\cimv2\power' -ComputerName $ComputerName -Filter "isActive='true'"
    if ($PowerScheme.ElementName -ne "High performance") {
        Write-Host "WARNING" -ForegroundColor Yellow -NoNewline
        Write-Host ": Computer Power Scheme is not set to High Performance. Pure Storage best practice is to set this power plan as default."
        Write-Host " "
        Write-Host "REQUIRED ACTION: Set the Power Plan to High Performance?"
        $resp = Read-Host -Prompt "Y/N?"
        if ($resp.ToUpper() -eq 'Y') {
            $planId = "8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c"
            powercfg -setactive "$planId"
        }
    }
    else {
        Write-Host "PASSED" -ForegroundColor Green -NoNewline
        Write-Host ": Computer Power Scheme is already set to High Performance. Exiting."
    }
}
#endregion

#region Get-QuickFixEngineering
function Get-QuickFixEngineering() {
    <#
    .SYNOPSIS
    Retrieves all the Windows OS QFE patches applied.
    .DESCRIPTION
    Retrieves all the Windows OS QFE patches applied.
    .INPUTS
    None
    .OUTPUTS
    Outputs a listing of QFE patches applied.
    .EXAMPLE
    Get-QuickFixEngineering
    #>
    Get-WmiObject -Class Win32_QuickFixEngineering | Select-Object -Property Description, HotFixID, InstalledOn | Format-Table -Wrap
}
#endregion

#region Get-HostBusAdapter
function Get-HostBusAdapter() {
    <#
    .SYNOPSIS
    Retrieves host Bus Adapater (HBA) information.
    .DESCRIPTION
    Retrieves host Bus Adapater (HBA) information for the host.
    .PARAMETER ComputerName
    Optional. The computer name to run the cmdlet against. It defaults to the local computer name.
    .INPUTS
    Computer name is optional.
    .OUTPUTS
    Host Bus Adapter information.
    .EXAMPLE
    Get-HostBusAdapter -ComputerName myComputer
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $False)] [string] $ComputerName  = "$env:COMPUTERNAME"
    )

    try {
        $port = Get-WmiObject -Class MSFC_FibrePortHBAAttributes -Namespace 'root\WMI' -ComputerName $ComputerName
        $hbas = Get-WmiObject -Class MSFC_FCAdapterHBAAttributes -Namespace 'root\WMI' -ComputerName $ComputerName
        $hbaProp = $hbas | Get-Member -MemberType Property, AliasProperty | Select-Object -ExpandProperty name | Where-Object { $_ -notlike '__*' }
        $hbas = $hbas | Select-Object -ExpandProperty $hbaProp
        $hbas | ForEach-Object { $_.NodeWWN = ((($_.NodeWWN) | ForEach-Object { '{0:x2}' -f $_ }) -join ':').ToUpper() }

        ForEach ($hba in $hbas) {
            Add-Member -MemberType NoteProperty -InputObject $hba -Name FabricName -Value (($port | Where-Object { $_.instancename -eq $hba.instancename }).attributes | Select-Object @{ Name = 'Fabric Name'; Expression = { (($_.fabricname | ForEach-Object { '{0:x2}' -f $_ }) -join ':').ToUpper() } }, @{ Name = 'Port WWN'; Expression = { (($_.PortWWN | ForEach-Object { '{0:x2}' -f $_ }) -join ':').ToUpper() } }) -PassThru
        }
    }
    catch {

    }
}
#endregion

#region Register-HostVolumes
function Register-HostVolumes() {
    <#
    .SYNOPSIS
    Sets Pure FlashArray connected disks to online.
    .DESCRIPTION
    This cmdlet will set any FlashArray volumes (disks) to online in Windows using the diskpart command.
    .PARAMETER ComputerName
    Optional. The computer name to run the cmdlet against. It defaults to the local computer name.
    .INPUTS
    None
    .OUTPUTS
    None
    .EXAMPLE
    Register-HostVolumes -ComputerName myComputer

    Sets all FlashArray disks for myComputer to online.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $False)] [string]$ComputerName = "$env:COMPUTERNAME"
    )

    $cmds = "`"RESCAN`""
    $scriptblock = [string]::Join(',', $cmds)
    $diskpart = $ExecutionContext.InvokeCommand.NewScriptBlock("$scriptblock | DISKPART")
    $result = Invoke-Command -ComputerName $ComputerName -ScriptBlock $diskpart
    $disks = Invoke-Command -ComputerName $ComputerName { Get-Disk }
#    $i = 0
    ForEach ($disk in $disks) {
        If ($disk.FriendlyName -like 'PURE FlashArray*') {
            If ($disk.OperationalStatus -ne 1) {
                $disknumber = $disk.Number
                $cmds = "`"SELECT DISK $disknumber`"",
                "`"ATTRIBUTES DISK CLEAR READONLY`"",
                "`"ONLINE DISK`""
                $scriptblock = [string]::Join(',', $cmds)
                $diskpart = $ExecutionContext.InvokeCommand.NewScriptBlock("$scriptblock | DISKPART")
                $result = Invoke-Command -ComputerName $ComputerName -ScriptBlock $diskpart -ErrorAction Stop
            }
        }
    }
}
#endregion

#region Unregister-HostVolumes
function Unregister-HostVolumes() {
    <#
    .SYNOPSIS
    Sets Pure FlashArray connected disks to offline.
    .DESCRIPTION
    This cmdlet will set any FlashArray volumes (disks) to offline in Windows using the diskpart command.
    .PARAMETER ComputerName
    Optional. The computer name to run the cmdlet against. It defaults to the local computer name.
    .INPUTS
    None
    .OUTPUTS
    None
    .EXAMPLE
    Unregister-HostVolumes -ComputerName myComputer

    Offlines all FlashArray disks from myComputer.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $False)] [string]$Computername = "$env:COMPUTERNAME"
    )

    $cmds = "`"RESCAN`""
    $scriptblock = [string]::Join(',', $cmds)
    $diskpart = $ExecutionContext.InvokeCommand.NewScriptBlock("$scriptblock | DISKPART")
    $result = Invoke-Command -ComputerName $Computername -ScriptBlock $diskpart
    $disks = Invoke-Command -ComputerName $Computername { Get-Disk }
    ForEach ($disk in $disks) {
        If ($disk.FriendlyName -like 'PURE FlashArray*') {
            If ($disk.OperationalStatus -ne 1) {
                $disknumber = $disk.Number
                $cmds = "`"SELECT DISK $disknumber`"",
                "`"OFFLINE DISK`""
                $scriptblock = [string]::Join(',', $cmds)
                $diskpart = $ExecutionContext.InvokeCommand.NewScriptBlock("$scriptblock | DISKPART")
                $result = Invoke-Command -ComputerName $Computername -ScriptBlock $diskpart -ErrorAction Stop
            }
        }
    }
}
#endregion

#region Get-MPIODiskLBPolicy
function Get-MPIODiskLBPolicy() {
    <#
    .SYNOPSIS
    Retrieves the current MPIO Load Balancing policy for Pure FlashArray disk(s).
    .DESCRIPTION
    This cmdlet will retrieve the current MPIO Load Balancing policy for connected Pure FlashArrays disk(s) using the mpclaim.exe utlity.
    .PARAMETER DiskID
    Optional. If specified, retrieves only the policy for the that disk ID. Otherwise, returns all disks.
    DiskID is the 'Number' identifier of the disk from the cmdlet 'Get-Disk'.
    .INPUTS
    None
    .OUTPUTS
    mpclaim.exe output
    .EXAMPLE
    Get-MPIODiskLBPolicy -DiskID 1

    Returns the current MPIO LB policy for disk ID 1.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $False)][string]$DiskId
    )
    function Invoke-mpclaim($param1, $param2, $param3) {
        . mpclaim.exe $param1 $param2 $param3
    }
    #Checks whether mpclaim.exe is available.
    $exists = Test-Path "$env:systemroot\System32\mpclaim.exe"
    if (-not ($exists)) {
        Write-Host "mpclaim.exe not found. Is MultiPathIO enabled? Exiting." -ForegroundColor Yellow
        break
    }
    if ($DiskId) {
        Write-Host "Getting current MPIO Load Balancing Policy for DiskID " + $DiskId -ForegroundColor Green
        $result = Invoke-mpclaim -param1 "-s" -param2 "-d" -param3 $DiskId
        return $result
    }
    else {
        Write-Host "Getting current MPIO Load Balancing Policy for all MPIO disks." -ForegroundColor Green
        $result = Invoke-mpclaim -param1 "-s" -param2 "-d"
        return $result
    }
}
#endregion

#region Set-MPIODiskLBPolicy
function Set-MPIODiskLBPolicy() {
    <#
    .SYNOPSIS
    Sets the MPIO Load Balancing policy for FlashArray disks.
    .DESCRIPTION
    This cmdlet will set the MPIO Load Balancing policy for all connected Pure FlashArrays disks to the desired setting using the mpclaim.exe utlity.
    The default Windows OS setting is RR.
    .PARAMETER Policy
    Required. No default. The Policy type must be specified by the letter acronym for the policy name (ex. "RR" for Round Robin). Available options are:
        LQD = Least Queue Depth
        RR = Round Robin
        FO = Fail Over Only
        RRWS = Round Robin with Subset
        WP = Weighted Paths
        LB = Least Blocks
        clear = clears current policy and sets to Windows OS default of RR
    .INPUTS
    None
    .OUTPUTS
    None
    .EXAMPLE
    Set-MPIODiskLBPolicy -Policy LQD

    Sets the MPIO load balancing policy for all Pure disks to Least Queue Depth.

    .EXAMPLE
    Set-MPIODiskLBPolicy -Policy clear

    Clears the current MPIO policy for all Pure disks and sets to the default of RR.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory)][ValidateSet('LQD','RR','clear','FO','RRWS','WP','LB',IgnoreCase = $true)][string]$Policy
    )
    If ($Policy -eq "LQD") { $pn = "4" }
    elseif ($Policy -eq "RR") { $pn = "2" }
    elseif ($Policy -like "clear") { $pn = "0" }
    elseif ($Policy -eq "FO") { $pn = "1" }
    elseif ($Policy -eq "RRWS") { $pn = "3" }
    elseif ($Policy -eq "WP") { $pn = "5" }
    elseif ($Policy -eq "LB") { $pn = "6" }
    else {
        Write-Host "Required policy type parameter of LQD, RR, FO, RRWS, WP LB, or clear not supplied. Exiting."
        break
    }
    function Invoke-MPclaim($param1, $param2, $param3, $param4) {
        . mpclaim.exe $param1 $param2 $param3 $param4
    }
    #Checks whether mpclaim.exe is available.
    $exists = Test-Path "$env:systemroot\System32\mpclaim.exe"
    if (-not ($exists)) {
        Write-Host "mpclaim.exe not found. Is MultiPathIO enabled? Exiting." -ForegroundColor Yellow
        break
    }
    Write-Host "Setting MPIO Load Balancing Policy to" + $pn + " for all Pure FlashArray disks."
    $puredisks = Get-PhysicalDisk | Where-Object FriendlyName -Match "PURE"
    $puredisks | ForEach-Object {
        # Get disk uniqueid
        $UniqueID = $_.UniqueId
        $MPIODisk = (Get-WmiObject -Namespace root\wmi -Class mpio_disk_info).driveinfo | Where-Object { $_.SerialNumber -eq $UniqueID }
        $MPIODiskID = $MPIODisk.Name.Replace("MPIO Disk", "")
        $MPIODiskID
        Invoke-mpclaim -param1 "-l" -param2 "-d" -param3 $MPIODiskID -param4 $pn
    }
    Write-Host "New disk LB policy settings:" -ForegroundColor Green
    Invoke-mpclaim -param1 "-s" -param2 "-d" -param3 "" -param4 ""
}
#endregion

#region Get-VolumeShadowCopy
function Get-VolumeShadowCopy() {
    <#
    .SYNOPSIS
    Retrieves the volume shadow copy informaion using the Diskhadow command.
    .DESCRIPTION

    .PARAMETER ExposeAs
    Required. Drive letter, share, or mount point to expose the shadow copy.
    .PARAMETER ScriptName
    Optional. Script text file name created to pass to the Diskshadow command. defaults to 'PUREVSS-SNAP'.
    .PARAMETER ShadowCopyAlias
    Required. Name of the shadow copy alias.
    .PARAMETER MetadataFile
    Required. Full filename for the metadata .cab file. It must exist in the current working folder.
    .PARAMETER VerboseMode
    Optional. "On" or "Off". If set to 'off', verbose mode for the Diskshadow command is disabled. Default is 'On'.
    .INPUTS
    None
    .OUTPUTS
    None
    .EXAMPLE
    Get-VolumeShadowCopy -MetadataFile myFile.cab -ShadowCopyAlias MyAlias -ExposeAs MyShadowCopy

    Exposes the MyAias shadow copy as drive latter G: using the myFie.cab metadata file.

    .NOTES
    See https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/diskshadow for more information on the Diskshadow utility.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $False)][string]$ScriptName = "PUREVSS-SNAP",
        [Parameter(Mandatory = $True)][string]$MetadataFile,
        [Parameter(Mandatory = $True)][string]$ShadowCopyAlias,
        [Parameter(Mandatory = $True)][string]$ExposeAs,
        [ValidateSet("On", "Off")][string]$VerboseMode = "On"
    )
    $dsh = "./$ScriptName.PFA"
    "SET VERBOSE $VerboseMode",
    'RESET',
    "LOAD METADATA $MetadataFile.cab",
    'IMPORT',
    "EXPOSE %$ShadowCopyAlias% $ExposeAs",
    'EXIT' | Set-Content $dsh
    DISKSHADOW /s $dsh
    Remove-Item $dsh
}
#endregion

#region New-VolumeShadowCopy
function New-VolumeShadowCopy() {
    <#
    .SYNOPSIS
    Creates a new volume shadow copy using Diskshadow.
    .DESCRIPTION
    This cmdlet will create a new volume shadow copy using the Diskshadow command, passing the variables specified.
    .PARAMETER Volume
    Required.
    .PARAMETER Scriptname
    Optional. Script text file name created to pass to the Diskshadow command. Pre-defined as 'PUREVSS-SNAP'.
    .PARAMETER ShadowCopyAlias
    Required. Name of the shadow copy alias.
    .PARAMETER VerboseMode
    Optional. "On" or "Off". If set to 'off', verbose mode for the Diskshadow command is disabled. Default is 'on'.
    .INPUTS
    None
    .OUTPUTS
    None
    .EXAMPLE
    New-VolumeShadowCopy -Volume Volume01 -ShadowCopyAlias MyAlias

    Adds a new volume shadow copy of Volume01 using Diskshadow with an alias of 'MyAlias'.

    .NOTES
    See https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/diskshadow for more information on the Diskshadow utility.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $True)][string[]]$Volume,
        [Parameter(Mandatory = $False)][string]$ScriptName = "PUREVSS-SNAP",
        [Parameter(Mandatory = $True)][string]$ShadowCopyAlias,
        [ValidateSet("On", "Off")][string]$VerboseMode = "On"
    )

    $dsh = "./$ScriptName.PFA"

    foreach ($Vol in $Volume) {
        "ADD VOLUME $Vol ALIAS $ShadowCopyAlias PROVIDER {781c006a-5829-4a25-81e3-d5e43bd005ab}"
    }
    'RESET',
    'SET CONTEXT PERSISTENT',
    'SET OPTION TRANSPORTABLE',
    "SET VERBOSE $VerboseMode",
    'BEGIN BACKUP',
    "ADD VOLUME $Volume ALIAS $ShadowCopyAlias PROVIDER {781c006a-5829-4a25-81e3-d5e43bd005ab}",
    'CREATE',
    'END BACKUP' | Set-Content $dsh
    DISKSHADOW /s $dsh
    Remove-Item $dsh
}
#endregion

#region Update-DriveInformation
function Update-DriveInformation() {
    <#
    .SYNOPSIS
    Updates drive letters and assigns a label.
    .DESCRIPTION
    Thsi cmdlet will update the current drive letter to the new drive letter, and assign a new drive label if specified.
    .PARAMETER NewDriveLetter
    Required. Drive lettwre without the colon.
    .PARAMETER CurrentDriveLetter
    Required. Drive lettwre without the colon.
    .PARAMETER NewDriveLabel
    Optional. Drive label text. Defaults to "NewDrive".
    .INPUTS
    None
    .OUTPUTS
    None
    .EXAMPLE
    Update-DriveInformation -NewDriveLetter S -CurrentDriveLetter M

    Updates the drive letter from M: to S: and labels S: to NewDrive.
    #>
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $True)][string]$NewDriveLetter,
        [Parameter(Mandatory = $True)][string]$CurrentDriveLetter,
        [Parameter(Mandatory = $False)][string]$NewDriveLabel = "NewDrive"
        )

    $Drive = Get-WmiObject -Class Win32_Volume | Where-Object { $_.DriveLetter -eq "$($CurrentDriveLetter):" }
    if (!($NewDriveLabel)) {
        Set-WmiInstance -Input $Drive -Arguments @{ DriveLetter = "$($NewDriveLetter):" } | Out-Null
    }
    else {
        Set-WmiInstance -Input $Drive -Arguments @{ DriveLetter = "$($NewDriveLetter):"; Label = "$($NewDriveLabel)" } | Out-Null
    }
}
#endregion

#region Set-TlsVersions
function Set-TlsVersions() {
    <#
    .SYNOPSIS
    Sets the TLS Version in the local registry.
    .DESCRIPTION
    This cmdlet disables TLS version 1.0 and enables TLS Versions 1.1, 1.2, and 1.3 in the local registry. It will prompt for creating a backup of the registry before execution for recovery purposes.
    .INPUTS
    None
    .OUTPUTS
    Backup of the registry before the changes are implemented.
    .EXAMPLE
    Set-TlsVersions

    Prompts for creation of a registry backup, disables TLS version 1.0, and enables TLS versions 1.1, 1.2, and 1.3.
    #>
    [CmdletBinding()]
    Param (
    )
    Write-Host "WARNING" -ForegroundColor Yellow -NoNewline
    Write-Host ": This cmdlet will change TLS protocol settings in the Registry. It is ***highly*** recommended to make a backup of your registry before executing this cmdlet."
    Write-Host " "
    Write-Host ": Would you like to create a complete registry backup file before proceeding?"
    $resp = Read-Host -Prompt "Y/N?"
    if ($resp.ToUpper() -eq 'Y') {
        Write-Host "A registry backup is being generated. It will be located in your $env:temp folder as registrybackup.reg."
        cmd /c regedit /E $env:temp\registrybackup.reg
        if (!(Test-Path $env:temp\registrybackup.reg -PathType leaf)) {
            Write-Host "WARNING" -ForegroundColor Yellow -NoNewline
            Write-Host ": Registry backup failed. Please proceed with caution or manually backup the registry."
        }
        else {
            Write-Host "SUCCESS" -ForegroundColor Green -NoNewline
            Write-Host ": The registry backup was successful."
        }
    }
    Write-Host " "
    Write-Host "REQUIRED ACTION: Disable TLS 1.0 and enable TLS versions 1.1, 1.2, and 1.3 on this computer?"
    $resp = Read-Host -Prompt "Y/N?"
    if ($resp.ToUpper() -eq 'Y') {
        # Disable TLS v1.0
        New-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.0\Server' -Force | Out-Null
        New-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.0\Client' -Force | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.0\Server' -Name 'Enabled' -Value '0' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.0\Server' -Name 'DisabledByDefault' -Value '1' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.0\Client' -Name 'Enabled' -Value '0' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.0\Client' -Name 'DisabledByDefault' -Value '1' –PropertyType 'DWORD' | Out-Null
        Write-Host "SUCCESS" -ForegroundColor Green -NoNewline
        Write-Host ": TLS version 1.0 disabled."
        # Enable TLS v1.1
        New-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.1\Server' -Force | Out-Null
        New-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.1\Client' -Force | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.1\Server' -Name 'Enabled' -Value '1' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.1\Server' -Name 'DisabledByDefault' -Value '0' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.1\Client' -Name 'Enabled' -Value '1' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.1\Client' -Name 'DisabledByDefault' -Value '0' –PropertyType 'DWORD' | Out-Null
        Write-Host "SUCCESS" -ForegroundColor Green -NoNewline
        Write-Host ": TLS version 1.1 enabled."
        # Enable TLS v1.2
        New-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Server' -Force | Out-Null
        New-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Client' -Force | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Server' -Name 'Enabled' -Value '1' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Server' -Name 'DisabledByDefault' -Value '0' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Client' -Name 'Enabled' -Value '1' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Client' -Name 'DisabledByDefault' -Value '0' –PropertyType 'DWORD' | Out-Null
        Write-Host "SUCCESS" -ForegroundColor Green -NoNewline
        Write-Host ": TLS version 1.2 enabled."
        # Enable TLS v1.3
        New-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Server' -Force | Out-Null
        New-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Client' -Force | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Server' -Name 'Enabled' -Value '1' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Server' -Name 'DisabledByDefault' -Value '0' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Client' -Name 'Enabled' -Value '1' –PropertyType 'DWORD' | Out-Null
        New-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Client' -Name 'DisabledByDefault' -Value '0' –PropertyType 'DWORD' | Out-Null
        Write-Host "SUCCESS" -ForegroundColor Green -NoNewline
        Write-Host ": TLS version 1.3 enabled."
    }
    else {
        Write-Host "CANCELLED" -ForegroundColor Yellow -NoNewline
        Write-Host ": Action cancelled at user request."
    }
}
#endregion

#region Get-WindowsDiagnosticInfo
function Get-WindowsDiagnosticInfo() {
    <#

    .SYNOPSIS
    Gathers Windows operating system, hardware, and software information, including logs for diagnostics. This cmdlet requires Administrative permissions.
    .DESCRIPTION
    This script will collect detailed information on the Windows operating system, hardware and software components, and collect event logs in .evtx and .csv formats. It will optionally collect WSFC logs and optionally compress all gathered files intoa .zip file for easy distribution.
    This script will place all of the files in a parent folder in the root of the C:\ drive that is named after the computer NetBios name($env:computername).
    Each section of information gathered will have it's own child folder in that parent folder.
    .PARAMETER Cluster
    Optional. Collect Windows Server Failover Cluster (WSFC) logs.
    .PARAMETER Compress
    Optional. Compress the folder that contains all the gathered data into a zip file. The file name will be the computername_diagnostics.zip.
    .INPUTS
    None
    .OUTPUTS
    Diagnostic outputs in txt and event log files.
    Compressed zip file.
    .EXAMPLE
    Get-WindowsDiagnosticInfo.ps1 -Cluster

    Retrieves all of the operating system, hardware, software, event log, and WSFC logs into the default folder.

    .EXAMPLE
    Get-WindowsDiagnosticInfo.ps1 -Compress

    Retrieves all of the operating system, hardware, software, event log, and compresses the parent folder into a zip file that will be created in the root of the C: drive.

    .NOTES
    This cmdlet requires Administrative permissions.
    #>
    [cmdletbinding()]
    Param(
        [Parameter(ValuefromPipeline = $false, Mandatory = $false)][switch]$Cluster,
        [Parameter(ValuefromPipeline = $false, Mandatory = $false)][switch]$Compress
    )
    Get-ElevatedStatus
    # create root outfile
    $folder = Test-Path -PathType Container -Path "c:\$env:computername"
    if ($folder -eq "false") {
        New-Item -Path "c:\$env:computername" -ItemType "directory" | Out-Null
    }
    Set-Location -Path "c:\$env:computername"
    Write-Host ""

    # system information
    Write-Host "Retrieving MSInfo32 information. This will take some time to complete. Please wait..." -ForegroundColor Yellow
    msinfo32 /report msinfo32.txt | Out-Null
    Write-Host "Completed MSInfo32 information." -ForegroundColor Green
    Write-Host ""
    ## hotfixes
    Write-Host "Retrieving Hotfix information..." -ForegroundColor Yellow
    Get-WmiObject -Class Win32_QuickFixEngineering | Select-Object -Property Description, HotFixID, InstalledOn | Format-Table -Wrap -AutoSize | Out-File  "HotfixesQFE.txt"
    Get-HotFix | Format-Table -Wrap -AutoSize | Out-File "Get-Hotfix.txt"
    Write-Host "Completed HotfixQFE information." -ForegroundColor Green
    Write-Host ""

    # storage information
    New-Item -Path "c:\$env:computername\storage" -ItemType "directory" | Out-Null
    Set-Location -Path "c:\$env:computername\storage"
    Write-Host "Retrieving Storage information..." -ForegroundColor Yellow
    fsutil behavior query DisableDeleteNotify | Out-File "fsutil_behavior_DisableDeleteNotify.txt"
    Get-PhysicalDisk | Select-Object * | Out-File "Get-PhysicalDisk.txt"
    Get-Disk | Select-Object * | Out-File "Get-Disk.txt"
    Get-Volume | Select-Object * | Out-File "Get-Volume.txt"
    Get-Partition | Select-Object * | Out-File "Get-Partition.txt"
    Write-Host "    Completed Disk information." -ForegroundColor Green
    Write-Host ""
    ## disk, MPIO, and MSDSM information
    Write-Host "    Retrieving MPIO and MSDSM information..." -ForegroundColor Yellow
    Get-ItemProperty "HKLM:\System\CurrentControlSet\Services\MSDSM\Parameters" | Out-File "Get-ItemProperty_msdsm.txt"
    Get-MSDSMGlobalDefaultLoadBalancePolicy | Out-File "Get-ItemProperty_msdsm_load_balance_policy.txt"
    Get-ItemProperty "HKLM:\System\CurrentControlSet\Services\mpio\Parameters" | Out-File "Get-ItemProperty_mpio.txt"
    Get-ItemProperty "HKLM:\System\CurrentControlSet\Services\Disk" | Out-File "Get-ItemProperty_disk.txt"
    mpclaim -s -d | Out-File "mpclaim_-s_-d.txt"
    mpclaim -v | Out-File "mpclaim_-v.txt"
    Get-MPIOSetting | Out-File "Get-MPIOSetting.txt"
    Get-MPIOAvailableHW | Out-File "Get-MPIOAvailableHW.txt"
    Write-Host "    Completed MPIO, & MSDSM information." -ForegroundColor Green
    Write-Host ""
    ## Fibre Channel information
    Write-Host "    Retrieving Fibre Channel information..." -ForegroundColor Yellow
    winrm e wmi/root/wmi/MSFC_FCAdapterHBAAttributes > MSFC_FCAdapterHBAAttributes.txt
    winrm e wmi/root/wmi/MSFC_FibrePortHBAAttributes > MSFC_FibrePortHBAAttributes.txt
    Get-InitiatorPort | Out-File "Get-InitiatorPort.txt"
    Write-Host "    Completed Fibre Channel information." -ForegroundColor Green
    Write-Host ""
    Write-Host "Completed Storage information." -ForegroundColor Green
    Write-Host ""

    # Network information
    New-Item -Path "c:\$env:computername\network" -ItemType "directory" | Out-Null
    Set-Location -Path "c:\$env:computername\network"
    Write-Host "Retrieving Network information..." -ForegroundColor Yellow
    Get-NetAdapter | Format-Table Name, ifIndex, Status, MacAddress, LinkSpeed, InterfaceDescription -AutoSize | Out-File "Get-NetAdapter.txt"
    Get-NetAdapterAdvancedProperty | Format-Table DisplayName, DisplayValue, ValidDisplayValues | Out-File "Get-NetAdapterAdvancedProperty.txt" -Width 160
    Write-Host "Completed Network information." -ForegroundColor Green
    Write-Host ""

    # Event Logs in evtx format
    New-Item -Path "c:\$env:computername\eventlogs" -ItemType "directory" | Out-Null
    Set-Location -Path "c:\$env:computername\eventlogs"
    Write-Host "Retrieving Event Logs unfiltered." -ForegroundColor Yellow
    wevtutil epl System "systemlog.evtx"
    wevtutil epl Setup "setuplog.evtx"
    wevtutil epl Security "securitylog.evtx"
    wevtutil epl Application "applicationlog.evtx"
    Write-Host "   Completed .evtx log files." -ForegroundColor Green
    ## create locale files
    wevtutil al "systemlog.evtx"
    wevtutil al "setuplog.evtx"
    wevtutil al "securitylog.evtx"
    wevtutil al "applicationlog.evtx"
    Write-Host "   Completed locale .evtx log files." -ForegroundColor Green
    ## get error & warning events & export to csv
    Write-Host "Retrieving filtered Event Logs. This will take some time to complete. Please wait..." -ForegroundColor Yellow
    Get-WinEvent -FilterHashtable @{LogName = 'Application'; 'Level' = 1, 2, 3 } -ErrorAction SilentlyContinue | Export-Csv "application_log-CRITICAL_ERROR_WARNING.csv" -NoTypeInformation
    Get-WinEvent -FilterHashtable @{LogName = 'System'; 'Level' = 1, 2, 3 } -ErrorAction SilentlyContinue | Export-Csv "system_log-CRITICAL_ERROR_WARNING.csv" -NoTypeInformation
    Get-WinEvent -FilterHashtable @{LogName = 'Security'; 'Level' = 1, 2, 3 } -ErrorAction SilentlyContinue | Export-Csv "security_log-CRITICAL_ERROR_WARNING.csv" -NoTypeInformation
    Get-WinEvent -FilterHashtable @{LogName = 'Setup'; 'Level' = 1, 2, 3 } -ErrorAction SilentlyContinue | Export-Csv "setup_log-CRITICAL_ERROR_WARNING.csv" -NoTypeInformation
    Write-Host "   Completed Critical, Error, & Warning .csv log files." -ForegroundColor Green
    ## get information events & export to csv
    Get-WinEvent -FilterHashtable @{LogName = 'Application'; 'Level' = 4 } -ErrorAction SilentlyContinue | Export-Csv "application_log-INFO.csv" -NoTypeInformation
    Get-WinEvent -FilterHashtable @{LogName = 'System'; 'Level' = 4 } -ErrorAction SilentlyContinue | Export-Csv "system_log-INFO.csv" -NoTypeInformation
    Get-WinEvent -FilterHashtable @{LogName = 'Security'; 'Level' = 4 } -ErrorAction SilentlyContinue | Export-Csv "security_log-INFO.csv" -NoTypeInformation
    Get-WinEvent -FilterHashtable @{LogName = 'Setup'; 'Level' = 4 } -ErrorAction SilentlyContinue | Export-Csv "setup_log-INFO.csv" -NoTypeInformation
    Write-Host "   Completed Informational .csv log files." -ForegroundColor Green
    Write-Host ""
    Write-Host "Completed Event Logs." -ForegroundColor Green
    Write-Host ""

    # WSFC inforation
    If ($Cluster.IsPresent) {
        New-Item -Path "c:\$env:computername\cluster" -ItemType "directory" | Out-Null
        Set-Location -Path "c:\$env:computername\cluster"
        Write-Host "Retrieving Cluster Logs. This may take some time to complete. Please wait..." -ForegroundColor Yellow
        Get-ClusterLog -Destination . | Out-Null
        Get-ClusterSharedVolume | Select-Object * | Out-File "Get-ClusterSharedVolume.txt"
        Get-ClusterSharedVolumeState | Select-Object * | Out-File "Get-ClusterSharedVolumeState.txt"
        Write-Host "Completed Cluster information." -ForegroundColor Green
        Write-Host ""
    }

    # Compress folder
    If ($Compress.IsPresent) {
        Write-Host "Starting folder compression. Please wait..." -ForegroundColor Yellow
        Set-Location -Path "\"
        $compress = @{
            Path             = "c:\$env:computername"
            CompressionLevel = "Optimal"
            DestinationPath  = $env:computername + "_diagnostics.zip"
        }
        Compress-Archive @compress
        Write-Host "Completed folder compression." -ForegroundColor Green
    }
    Write-Host ""
    Write-Host "Information collection completed."
}
#endregion

#### END WINDOWS FUNCTIONS

#### DBA TOOLKIT FUNCTIONS
### migrated from the Pure Storage DBA Toolkit module in July 2021

#region Invoke-FlashArrayDbRefresh
function Invoke-FlashArrayDbRefresh {
<#
.SYNOPSIS
A PowerShell function to refresh one or more SQL Server databases (the destination) from either a snapshot or database.

.DESCRIPTION
A PowerShell function to refresh one or more SQL Server databases either from:
- a snapshot specified by its name
- a snapshot picked from a list associated with the volume the source database resides on
- a source database directly

This  function will detect and repair orpaned users in refreshed databases and optionally
apply data masking, based on either:
- the dynamic data masking functionality available in SQL Server version 2016 onwards,
- static data masking built into dbatools from version 0.9.725, refer to https://dbatools.io/mask/

.PARAMETER RefreshDatabase
Required. The name of the database to refresh, note that it is assumed that source and target database(s) are named the same.

.PARAMETER RefreshSource
Required. If the RefreshFromSnapshot flag is specified, this parameter takes the name of a snapshot, otherwise this takes the
name of the source SQL Server instance.

.PARAMETER DestSqlInstance
Required. This can be one or multiple SQL Server instance(s) that host the database(s) to be refreshed, in the case that the
function is invoked  to refresh databases across more than one instance, the list of target instances should be
spedcified as an array of strings, otherwise a single string representing the target instance will suffice.

.PARAMETER Endpoint
Required. The IP address representing the FlashArray that the volumes for the source and refresh target databases reside on.

.PARAMETER PollJobInterval
Optional. Interval at which background job status is poll, if this is ommited polling will not take place. Note that this parameter
is not applicable is the PromptForSnapshot switch is specified.

.PARAMETER PromptForSnapshot
Optional. This is an optional flag that if specified will result in a list of snapshots being displayed for the database volume on
the FlashArray that the user can select one from. Despite the source of the refresh operation being an existing snapshot,
 the source instance still has to be specified by the RefreshSource parameter in order that the function can determine
which FlashArray volume to list existing snapshots for.

.PARAMETER RefreshFromSnapshot
Optional. This is an optional flag that if specified causes the function to expect the RefreshSource parameter to be supplied with
the name of an existing snapshot.

.PARAMETER NoPsRemoting
Optional. The commands that off and online the windows volumes associated with the refresh target databases will use Invoke-Command
with powershell remoting unless this flag is specified. Certain tools that can invoke PowerShell, Ansible for example, do
not permit double-hop authentication unless CredSSP authentication is used. For security purposes Kerberos is recommended
over CredSSP, however this does not support double-hop authentication, in which case this flag should be specified.

.PARAMETER ApplyDataMasks
Optional. Specifying this optional masks will cause data masks to be applied , as per the dynamic data masking feature first
introduced with SQL Server 2016, this results in this function invoking the Invoke-DynamicDataMasking function to be invoked.
For documentation on Invoke-DynamicDataMasking, use the command Get-Help Invoke-DynamicDataMasking -Detailed.

.PARAMETER ForceDestDbOffline
Optional. Specifying this switch will cause refresh target databases for be forced offline via WITH ROLLBACK IMMEDIATE.

.PARAMETER StaticDataMaskFile
Optional. If this parameter is present and has a file path associated with it, the data masking available in version 0.9.725 of the
dbatools module onwards will be applied  to the refreshed database. The use of this is contigent on the data mask file
being created and populated in the first place as per this blog post: https://dbatools.io/mask/ .

.EXAMPLE
Invoke-FlashArrayDbRefresh -RefreshDatabase tpch-no-compression -RefreshSource z-sql2016-devops-prd -DestSqlInstance z-sql2016-devops-tst -Endpoint 10.225.112.10 `
-PromptForSnapshot

Refresh a single database from a snapshot selected from a list of snapshots associated with the volume specified by the RefreshSource parameter.
.EXAMPLE
$Targets = @("z-sql2016-devops-tst", "z-sql2016-devops-dev")
Invoke-FlashArrayDbRefresh -RefreshDatabase tpch-no-compression -RefreshSource z-sql2016-devops-prd -DestSqlInstance $Targets -Endpoint 10.225.112.10 `
-PromptForSnapshot

Refresh multiple databases from a snapshot selected from a list of snapshots associated with the volume specified by the RefreshSource parameter.
.EXAMPLE
Invoke-FlashArrayDbRefresh -RefreshDatabase tpch-no-compression -RefreshSource source-snap -DestSqlInstance z-sql2016-devops-tst -Endpoint 10.225.112.10 `
-RefreshFromSnapshot

Refresh a single database using the snapshot specified by the RefreshSource parameter.
.EXAMPLE
$Targets = @("z-sql2016-devops-tst", "z-sql2016-devops-dev")
Invoke-FlashArrayDbRefresh -RefreshDatabase tpch-no-compression -RefreshSource source-snap -DestSqlInstance $Targets -Endpoint 10.225.112.10 `
-RefreshFromSnapshot

Refresh multiple databases using the snapshot specified by the RefreshSource parameter.
.EXAMPLE
Invoke-FlashArrayDbRefresh -$RefreshDatabase tpch-no-compression -RefreshSource z-sql-prd -DestSqlInstance z-sql2016-devops-tst -Endpoint 10.225.112.10

Refresh a single database from the database specified by the SourceDatabase parameter residing on the instance specified by RefreshSource.
.EXAMPLE
$Targets = @("z-sql2016-devops-tst", "z-sql2016-devops-dev")
Invoke-FlashArrayDbRefresh -$RefreshDatabase tpch-no-compression -RefreshSource z-sql-prd -DestSqlInstance $Targets -Endpoint 10.225.112.10 `

Refresh multiple databases from the database specified by the SourceDatabase parameter residing on the instance specified by RefreshSource.
.EXAMPLE
$Targets = @("z-sql2016-devops-tst", "z-sql2016-devops-dev")
Invoke-PfaDbRefresh -$RefreshDatabase tpch-no-compression -RefreshSource z-sql-prd -DestSqlInstance $Targets -Endpoint 10.225.112.10 `
-ApplyDataMasks

Refresh multiple databases from the database specified by the SourceDatabase parameter residing on the instance specified by RefreshSource.
.EXAMPLE
$StaticDataMaskFile = "D:\apps\datamasks\z-sql-prd.tpch-no-compression.tables.json"
$Targets = @("z-sql2016-devops-tst", "z-sql2016-devops-dev")
Invoke-FlashArrayDbRefresh -$RefreshDatabase tpch-no-compression -RefreshSource z-sql-prd -DestSqlInstance $Targets -Endpoint 10.225.112.10 `
-StaticDataMaskFile $StaticDataMaskFile

Refresh multiple databases from the database specified by the SourceDatabase parameter residing on the instance specified by RefreshSource and apply SQL Server dynamic data masking to each database.
.EXAMPLE
$StaticDataMaskFile = "D:\apps\datamasks\z-sql-prd.tpch-no-compression.tables.json"
$Targets = @("z-sql2016-devops-tst", "z-sql2016-devops-dev")
Invoke-FlashArrayDbRefresh -$RefreshDatabase tpch-no-compression -RefreshSource z-sql-prd -DestSqlInstance $Targets -Endpoint 10.225.112.10 `
-ForceDestDbOffline -StaticDataMaskFile $StaticDataMaskFile

Refresh multiple databases from the database specified by the SourceDatabase parameter residing on the instance specified by RefreshSource and apply SQL Server dynamic data masking to each database.
All databases to be refreshed are forced offline prior to their underlying FlashArray volumes being overwritten.
.EXAMPLE
$StaticDataMaskFile = "D:\apps\datamasks\z-sql-prd.tpch-no-compression.tables.json"
$Targets = @("z-sql2016-devops-tst", "z-sql2016-devops-dev")
Invoke-FlashArrayDbRefresh -$RefreshDatabase tpch-no-compression -RefreshSource z-sql-prd -DestSqlInstance $Targets -Endpoint 10.225.112.10 `
-PollJobInterval 10 -ForceDestDbOffline -StaticDataMaskFile $StaticDataMaskFile

Refresh multiple databases from the database specified by the SourceDatabase parameter residing on the instance specified by RefreshSource and apply SQL Server dynamic data masking to each database.
All databases to be refreshed are forced offline prior to their underlying FlashArray volumes being overwritten. Poll the status of the refresh jobs once every 10 seconds.
.NOTES
FlashArray Credentials - A global variable $Creds may be used as described in the release notes for this module. If neither is specified, the module will prompt for credentials.

Known Restrictions
------------------
1. This function does not work for databases associated with failover cluster instances.
2. This function cannot be used to seed secondary replicas in availability groups using databases in the primary replica.
3. The function assumes that all database files and the transaction log reside on a single FlashArray volume.

Note that it has dependencies on the dbatools and PureStoragePowerShellSDK modules which are installed by this module.
#>
    param(
        [parameter(mandatory = $true)][string]$RefreshDatabase,
        [parameter(mandatory = $true)][string]$RefreshSource,
        [parameter(mandatory = $true)][string[]]$DestSqlInstances,
        [parameter(mandatory = $true)][string]$Endpoint,
        [parameter(mandatory = $false)][int]$PollJobInterval,
        [parameter(mandatory = $false)][switch]$PromptForSnapshot,
        [parameter(mandatory = $false)][switch]$RefreshFromSnapshot,
        [parameter(mandatory = $false)][switch]$NoPsRemoting,
        [parameter(mandatory = $false)][switch]$ApplyDataMasks,
        [parameter(mandatory = $false)][switch]$ForceDestDbOffline,
        [parameter(mandatory = $false)][string]$StaticDataMaskFile
    )

    $StartMs = Get-Date

    Get-Sdk1Module
    Get-DbaToolsModule

    if ( $PromptForSnapshot.IsPresent.Equals($false) -And $RefreshFromSnapshot.IsPresent.Equals($false) ) {
        try {
            $SourceDb = Get-DbaDatabase -SqlInstance $RefreshSource -Database $RefreshDatabase
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to source database $RefreshSource.$Database with: $ExceptionMessage"
            Return
        }

        Write-Color -Text "Source SQL Server instance: ", $RefreshSource, " - CONNECTED" -Color Yellow, Green, Green

        try {
            $SourceServer = (Connect-DbaInstance -SqlInstance $RefreshSource).ComputerNamePhysicalNetBIOS
        }
        catch {
            Write-Error "Failed to determine target server name with: $ExceptionMessage"
        }
    }
    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    Write-Color -Text "FlashArray endpoint       : ", "CONNECTED" -ForegroundColor Yellow, Green

    $GetDbDisk = { param ( $Db )
        $DbDisk = Get-Partition -DriveLetter $Db.PrimaryFilePath.Split(':')[0] | Get-Disk
        return $DbDisk
    }

    $Snapshots = $(Get-PfaAllVolumeSnapshots $FlashArray)
    $FilteredSnapshots = $Snapshots.where( { ([string]$_.Source) -eq $RefreshSource })

    if ( $PromptForSnapshot.IsPresent ) {
        Write-Host ' '
        for ($i = 0; $i -lt $FilteredSnapshots.Count; $i++) {
            Write-Host 'Snapshot ' $i.ToString()
            $FilteredSnapshots[$i]
        }

        $SnapshotId = Read-Host -Prompt 'Enter the number of the snapshot to be used for the database refresh'
    }
    elseif ( $RefreshFromSnapshot.IsPresent.Equals( $false ) ) {
        try {
            if ( $NoPsRemoting.IsPresent ) {
                $SourceDisk = Invoke-Command -ScriptBlock $GetDbDisk -ArgumentList $SourceDb
            }
            else {
                $SourceDisk = Invoke-Command -ComputerName $SourceServer -ScriptBlock $GetDbDisk -ArgumentList $SourceDb
            }
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to determine source disk with: $ExceptionMessage"
            Return
        }

        try {
            $SourceVolume = Get-PfaVolumes -Array $FlashArray | Where-Object { $_.serial -eq $SourceDisk.SerialNumber } | Select-Object name
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to determine source volume with: $ExceptionMessage"
            Return
        }
    }

    if ( $PromptForSnapshot.IsPresent ) {
        Foreach ($DestSqlInstance in $DestSqlInstances) {
            Invoke-DbRefresh -DestSqlInstance $DestSqlInstance `
                -RefreshDatabase $RefreshDatabase `
                -Endpoint     $Endpoint     `
                -Creds  $Creds  `
                -SourceVolume    $FilteredSnapshots[$SnapshotId]
        }
    }
    else {
        $JobNumber = 1
        Foreach ($DestSqlInstance in $DestSqlInstances) {
            $JobName = "DbRefresh" + $JobNumber
            Write-Colour -Text "Refresh background job    : ", $JobName, " - ", "PROCESSING" -Color Yellow, Green, Green, Green
            If ( $RefreshFromSnapshot.IsPresent ) {
                Start-Job -Name $JobName -ScriptBlock $Function:DbRefresh -ArgumentList $DestSqlInstance   , `
                    $RefreshDatabase   , `
                    $Endpoint       , `
                    $Creds    , `
                    $RefreshSource     , `
                    $StaticDataMaskFile, `
                    $ForceDestDbOffline.IsPresent, `
                    $NoPsRemoting.IsPresent      , `
                    $PromptForSnapshot.IsPresent , `
                    $ApplyDataMasks.IsPresent | Out-Null
            }
            else {
                Start-Job -Name $JobName -ScriptBlock $Function:DbRefresh -ArgumentList $DestSqlInstance   , `
                    $RefreshDatabase   , `
                    $Endpoint       , `
                    $Creds    , `
                    $SourceVolume.Name , `
                    $StaticDataMaskFile, `
                    $ForceDestDbOffline.IsPresent, `
                    $NoPsRemoting.IsPresent      , `
                    $PromptForSnapshot.IsPresent , `
                    $ApplyDataMasks.IsPresent | Out-Null
            }
            $JobNumber += 1;
        }

        While (Get-Job -State Running | Where-Object { $_.Name.Contains("DbRefresh") }) {
            if ($PSBoundParameters.ContainsKey('PollJobInterval')) {
                Get-Job -State Running | Where-Object { $_.Name.Contains("DbRefresh") } | Receive-Job
                Start-Sleep -Seconds $PollJobInterval
            }
            else {
                Start-Sleep -Seconds 1
            }
        }

        Write-Colour -Text "Refresh background jobs   : ", "COMPLETED" -Color Yellow, Green

        foreach ($job in (Get-Job | Where-Object { $_.Name.Contains("DbRefresh") })) {
            $result = Receive-Job $job
            Write-Host $result
        }

        Remove-Job -State Completed
    }

    $EndMs = Get-Date
    Write-Host " "
    Write-Host "-------------------------------------------------------"         -ForegroundColor Green
    Write-Host " "
    Write-Host "D A T A B A S E      R E F R E S H      C O M P L E T E"         -ForegroundColor Green
    Write-Host " "
    Write-Host "              Duration (s) = " ($EndMs - $StartMs).TotalSeconds  -ForegroundColor White
    Write-Host " "
    Write-Host "-------------------------------------------------------"         -ForegroundColor Green
}
function DbRefresh {
    param(
        [parameter(mandatory = $true)][string]$DestSqlInstance,
        [parameter(mandatory = $true)][string]$RefreshDatabase,
        [parameter(mandatory = $true)][string]$Endpoint,
        [parameter(mandatory = $true)][string]$SourceVolume,
        [parameter(mandatory = $false)][string]$StaticDataMaskFile,
        [parameter(mandatory = $false)][bool]$ForceDestDbOffline,
        [parameter(mandatory = $false)][bool]$NoPsRemoting,
        [parameter(mandatory = $false)][bool]$PromptForSnapshot,
        [parameter(mandatory = $false)][bool]$ApplyDataMasks
    )

    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    try {
        $DestDb = Get-DbaDatabase -SqlInstance $DestSqlInstance -Database $RefreshDatabase
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to connect to destination database $DestSqlInstance.$Database with: $ExceptionMessage"
        Return
    }

    Write-Host " "
    Write-Colour -Text "Target SQL Server instance: ", $DestSqlInstance, "- CONNECTED" -ForegroundColor Yellow, Green, Green

    try {
        $TargetServer = (Connect-DbaInstance -SqlInstance $DestSqlInstance).ComputerNamePhysicalNetBIOS
    }
    catch {
        Write-Error "Failed to determine target server name with: $ExceptionMessage"
    }

    Write-Colour -Text "Target SQL Server host    : ", $TargetServer -ForegroundColor Yellow, Green

    $GetDbDisk = { param ( $Db )
        $DbDisk = Get-Partition -DriveLetter $Db.PrimaryFilePath.Split(':')[0] | Get-Disk
        return $DbDisk
    }

    $GetVolumeLabel = { param ( $Db )
        Write-Verbose "Target database drive letter = $Db.PrimaryFilePath.Split(':')[0]"
        $VolumeLabel = $(Get-Volume -DriveLetter $Db.PrimaryFilePath.Split(':')[0]).FileSystemLabel
        Write-Verbose "Target database windows volume label = <$VolumeLabel>"
        return $VolumeLabel
    }

    try {
        if ( $NoPsRemoting ) {
            $DestDisk = Invoke-Command -ScriptBlock $GetDbDisk -ArgumentList $DestDb
            $DestVolumeLabel = Invoke-Command -ScriptBlock $GetVolumeLabel -ArgumentList $DestDb
        }
        else {
            $DestDisk = Invoke-Command -ComputerName $TargetServer -ScriptBlock $GetDbDisk -ArgumentList $DestDb
            $DestVolumeLabel = Invoke-Command -ComputerName $TargetServer -ScriptBlock $GetVolumeLabel -ArgumentList $DestDb
        }
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to determine destination database disk with: $ExceptionMessage"
        Return
    }

    Write-Colour -Text "Target drive letter       : ", $DestDb.PrimaryFilePath.Split(':')[0] -ForegroundColor Yellow, Green

    try {
        $DestVolume = Get-PfaVolumes -Array $FlashArray | Where-Object { $_.serial -eq $DestDisk.SerialNumber } | Select-Object name

        if (!$DestVolume) {
            throw "Failed to determine destination FlashArray volume, check that source and destination volumes are on the SAME array"
        }
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to determine destination FlashArray volume with: $ExceptionMessage"
        Return
    }

    Write-Colour -Text "Target Pfa volume         : ", $DestVolume.name -ForegroundColor Yellow, Green

    $OfflineDestDisk = { param ( $DiskNumber, $Status )
        Set-Disk -Number $DiskNumber -IsOffline $Status
    }

    try {
        if ( $ForceDestDbOffline ) {
            $ForceDatabaseOffline = "ALTER DATABASE [$RefreshDatabase] SET OFFLINE WITH ROLLBACK IMMEDIATE"
            Invoke-DbaQuery -ServerInstance $DestSqlInstance -Database $RefreshDatabase -Query $ForceDatabaseOffline
        }
        else {
            $DestDb.SetOffline()
        }
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to offline database $Database with: $ExceptionMessage"
        Return
    }

    Write-Colour -Text "Target database           : ", "OFFLINE" -ForegroundColor Yellow, Green

    try {
        if ( $NoPsRemoting ) {
            Invoke-Command -ScriptBlock $OfflineDestDisk -ArgumentList $DestDisk.Number, $True
        }
        else {
            Invoke-Command -ComputerName $TargetServer -ScriptBlock $OfflineDestDisk -ArgumentList $DestDisk.Number, $True
        }
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to offline disk with : $ExceptionMessage"
        Return
    }

    Write-Colour -Text "Target windows disk       : ", "OFFLINE" -ForegroundColor Yellow, Green

    $StartCopyVolMs = Get-Date

    try {
        Write-Colour -Text "Source Pfa volume         : ", $SourceVolume -ForegroundColor Yellow, Green
        New-PfaVolume -Array $FlashArray -VolumeName $DestVolume.name -Source $SourceVolume -Overwrite
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to refresh test database volume with : $ExceptionMessage"
        Set-Disk -Number $DestDisk.Number -IsOffline $False
        $DestDb.SetOnline()
        Return
    }

    Write-Colour -Text "Volume overwrite          : ", "SUCCESSFUL" -ForegroundColor Yellow, Green
    $EndCopyVolMs = Get-Date
    Write-Colour -Text "Overwrite duration (ms)   : ", ($EndCopyVolMs - $StartCopyVolMs).TotalMilliseconds -Color Yellow, Green

    $SetVolumeLabel = { param ( $Db, $DestVolumeLabel )
        Set-Volume -DriveLetter $Db.PrimaryFilePath.Split(':')[0] -NewFileSystemLabel $DestVolumeLabel
    }

    try {
        if ( $NoPsRemoting ) {
            Invoke-Command -ScriptBlock $OfflineDestDisk -ArgumentList $DestDisk.Number, $False
            Invoke-Command -ScriptBlock $SetVolumeLabel -ArgumentList $DestDb, $DestVolumeLabel
        }
        else {
            Invoke-Command -ComputerName $TargetServer -ScriptBlock $OfflineDestDisk -ArgumentList $DestDisk.Number, $False
            Invoke-Command -ComputerName $TargetServer -ScriptBlock $SetVolumeLabel -ArgumentList $DestDb, $DestVolumeLabel
        }
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to online disk with : $ExceptionMessage"
        Return
    }

    Write-Colour -Text "Target windows disk       : ", "ONLINE" -ForegroundColor Yellow, Green

    try {
        $DestDb.SetOnline()
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to online database $Database with: $ExceptionMessage"
        Return
    }

    Write-Colour -Text "Target database           : ", "ONLINE" -ForegroundColor Yellow, Green

    if ( $ApplyDataMasks ) {
        Write-Host "Applying SQL Server dynamic data masks to $RefreshDatabase on SQL Server instance $DestSqlInstance" -ForegroundColor Yellow

        try {
            Invoke-DynamicDataMasking -SqlInstance $DestSqlInstance -Database $RefreshDatabase
            Write-Host "SQL Server dynamic data masking has been applied" -ForegroundColor Yellow
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to apply SQL Server dynamic data masks to $Database on $DestSqlInstance with: $ExceptionMessage"
            Return
        }
    }
    elseif ([System.IO.File]::Exists($StaticDataMaskFile)) {
        Write-Color -Text "Static data mask target   : ", $DestSqlInstance, " - ", $RefreshDatabase -Color Yellow, Green, Green, Green

        try {
            Invoke-StaticDataMasking -SqlInstance $DestSqlInstance -Database $RefreshDatabase -DataMaskFile $StaticDataMaskFile
            Write-Color -Text "Static data masking       : ", "APPLIED" -ForegroundColor Yellow, Green

        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to apply static data masking to $Database on $DestSqlInstance with: $ExceptionMessage"
            Return
        }
    }

    Repair-DbaDbOrphanUser -SqlInstance $DestSqlInstance -Database $RefreshDatabase | Out-Null
    Write-Color -Text "Orphaned users            : ", "REPAIRED" -ForegroundColor Yellow, Green
}
# endregion

#region Invoke-StaticDataMasking
function Invoke-StaticDataMasking {
<#
.SYNOPSIS
A PowerShell function to statically mask data in char, varchar and/or nvarchar columns using a MD5 hashing function.

.DESCRIPTION
This PowerShell function uses as input a JSON file created by calling the New-DbaDbMaskingConfig PowerShell function.
Data in the columns specified in this file which are of the type char, varchar or nvarchar are envrypted using a MD5
hash.

.PARAMETER SqlInstance
Required. The SQL Server instance of the database that static data masking is to be applied to.

.PARAMETER Database
Required. The database that static data masking is to be applied to.

.PARAMETER DataMaskFile
Required. Absolute path to the JSON file generated by invoking New-DbaDbMaskingConfig. The file can be subsequently editted by
hand to suit the data masking requirements of this function's user. Currently, static data masking is only supported for columns with char, varchar, nvarchar, int and bigint data types.

.EXAMPLE
Invoke-StaticDataMasking -SqlInstance  Z-STN-WIN2016-A\DEVOPSDEV -Database tpch-no-compression -DataMaskFile 'C:\Users\devops\Documents\tpch-no-compression.tables.json'

.NOTES
Note that it has dependencies on the dbatools module which are installed with this module.
#>
    param(
        [parameter(mandatory = $true)] [string] $SqlInstance,
        [parameter(mandatory = $true)] [string] $Database,
        [parameter(mandatory = $true)] [string] $DataMaskFile
    )

    Get-DbaToolsModule

    if ($DataMaskFile.ToString().StartsWith('http')) {
        $tables = Invoke-RestMethod -Uri $DataMaskFile
    }
    else {
        # Check if the destination is accessible
        if (-not (Test-Path -Path $DataMaskFile)) {
            Write-Error "Could not find data mask config file $DataMaskFile"
            Return
        }
    }

    # Get all the items that should be processed
    try {
        $tables = Get-Content -Path $DataMaskFile -ErrorAction Stop | ConvertFrom-Json -ErrorAction Stop
    }
    catch {
        Write-Error "Could not parse masking config file: $DataMaskFile" -ErrorRecord $_
    }

    foreach ($tabletest in $tables.Tables) {
        if ($Table -and $tabletest.Name -notin $Table) {
            continue
        }

        $ColumnIndex = 0
        $UpdateStatement = ""

        foreach ($columntest in $tabletest.Columns) {
            if ($columntest.ColumnType -in 'varchar', 'char', 'nvarchar') {
                if ($ColumnIndex -eq 0) {
                    $UpdateStatement = 'UPDATE ' + $tabletest.Name + ' SET ' + $columntest.Name + ' = SUBSTRING(CONVERT(VARCHAR, HASHBYTES(' + '''' + 'MD5' + '''' + ', ' + $columntest.Name + '), 1), 1, ' + $columntest.MaxValue + ')'
                }
                else {
                    $UpdateStatement += ', ' + $columntest.Name + ' = SUBSTRING(CONVERT(VARCHAR, HASHBYTES(' + '''' + 'MD5' + '''' + ', ' + $columntest.Name + '), 1), 1, ' + $columntest.MaxValue + ')'
                }
            }
            elseif ($columntest.ColumnType -eq 'int') {
                if ($ColumnIndex -eq 0) {
                    $UpdateStatement = 'UPDATE ' + $tabletest.Name + ' SET ' + $columntest.Name + ' = ABS(CHECKSUM(NEWID())) % 2147483647'
                }
                else {
                    $UpdateStatement += ', ' + $columntest.Name + ' = ABS(CHECKSUM(NEWID())) % 2147483647'
                }
            }
            elseif ($columntest.ColumnType -eq 'bigint') {
                if ($ColumnIndex -eq 0) {
                    $UpdateStatement = 'UPDATE ' + $tabletest.Name + ' SET ' + $columntest.Name + ' = ABS(CHECKSUM(NEWID()))'
                }
                else {
                    $UpdateStatement += ', ' + $columntest.Name + ' = ABS(CHECKSUM(NEWID()))'
                }
            }
            else {
                Write-Error "$columntest.ColumnType is not supported, please remove the column $columntest.Name from the $tabletest.Name table"
                Return
            }
            $ColumnIndex += 1
        }

        Write-Verbose "Statically masking table $tabletest.Name using $UpdateStatement"
        Invoke-DbaQuery -ServerInstance $SqlInstance -Database $Database -Query $UpdateStatement -QueryTimeout 999999
    }
}
#endregion

#region Invoke-DynamicDataMasking
function Invoke-DynamicDataMasking {
    <#
.SYNOPSIS
A PowerShell function to apply data masks to database columns using the SQL Server dynamic data masking feature.

.DESCRIPTION
This function uses the information stored in the extended properties of a database:
sys.extended_properties.name = 'DATAMASK' to obtain the dynamic data masking function to apply
at column level. Columns of the following data type are currently supported:

- int
- bigint
- char
- nchar
- varchar
- nvarchar

Using the c_address column in the tpch customer table as an example, the DATAMASK extended property can be applied
to the column as follows:

exec sp_addextendedproperty
     @name = N'DATAMASK'
    ,@value = N'(FUNCTION = 'partial(0, "XX", 20)''
    ,@level0type = N'Schema', @level0name = 'dbo'
    ,@level1type = N'Table',  @level1name = 'customer'
    ,@level2type = N'Column', @level2name = 'c_address'
GO

.PARAMETER SqlInstance
Required. The SQL Server instance of the database that data masking is to be applied to.

.PARAMETER Database
Required. The database that data masking is to be applied to.

.EXAMPLE
Invoke-DynamicDataMasking -SqlInstance Z-STN-WIN2016-A\DEVOPSDEV -Database tpch-no-compression

.NOTES
Note that it has dependencies on the dbatools and PureStoragePowerShellSDK  modules which are installed as part of this module.
#>
    param(
        [parameter(mandatory = $true)][string] $SqlInstance,
        [parameter(mandatory = $true)][string] $Database
    )

    Get-DbaToolsModule

    $sql = @"
BEGIN
	DECLARE  @sql_statement nvarchar(1024)
	        ,@error_message varchar(1024)

	DECLARE apply_data_masks CURSOR FOR
	SELECT       'ALTER TABLE ' + tb.name + ' ALTER COLUMN ' + c.name +
			   + ' ADD MASKED WITH '
			   + CAST(p.value AS char) + ''')'
	FROM       sys.columns c
	JOIN       sys.types t
	ON         c.user_type_id = t.user_type_id
	LEFT JOIN  sys.index_columns ic
	ON         ic.object_id = c.object_id
	AND        ic.column_id = c.column_id
	LEFT JOIN  sys.indexes i
	ON         ic.object_id = i.object_id
	AND        ic.index_id  = i.index_id
	JOIN       sys.tables tb
	ON         tb.object_id = c.object_id
	JOIN       sys.extended_properties AS p
	ON         p.major_id   = tb.object_id
	AND        p.minor_id   = c.column_id
	AND        p.class      = 1
	WHERE      t.name IN ('int', 'bigint', 'char', 'nchar', 'varchar', 'nvarchar');

	OPEN apply_data_masks
	FETCH NEXT FROM apply_data_masks INTO @sql_statement;

	WHILE @@FETCH_STATUS = 0
	BEGIN
	    PRINT 'Applying data mask: ' + @sql_statement;

		BEGIN TRY
		    EXEC sp_executesql @stmt = @sql_statement
		END TRY
		BEGIN CATCH
		    SELECT @error_message = ERROR_MESSAGE();
			PRINT 'Application of data mask failed with: ' + @error_message;
		END CATCH;

		FETCH NEXT FROM apply_data_masks INTO @sql_statement
	END;

	CLOSE apply_data_masks
	DEALLOCATE apply_data_masks;
END;
"@

    Invoke-DbaSqlQuery -SqlInstance $SqlInstance -Database $Database -Query $sql
}
#endregion

#region New-FlashArrayDbSnapshot
function New-FlashArrayDbSnapshot {
    <#
.SYNOPSIS
A PowerShell function to create a FlashArray snapshot of the volume that a database resides on.

.DESCRIPTION
A PowerShell function to create a FlashArray snapshot of the volume that a database resides on, based in the
values of the following parameters:

.PARAMETER Database
Required. The name of the database to refresh, note that it is assumed that source and target database(s) are named the same.

.PARAMETER SqlInstance
Required. This can be one or multiple SQL Server instance(s) that host the database(s) to be refreshed, in the case that the
function is invoked  to refresh databases  across more than one instance, the list of target instances should be
spedcified as an array of strings, otherwise a single string representing the target instance will suffice.

.PARAMETER Endpoint
Required. The IP address representing the FlashArray that the volumes for the source and refresh target databases reside on.

.EXAMPLE
New-FlashArrayDbSnapshot -Database tpch-no-compression -SqlInstance z-sql2016-devops-prd -Endpoint 10.225.112.10 -Creds $Creds

Create a snapshot of FlashArray volume that stores the tpch-no-compression database on the z-sql2016-devops-prd instance

.NOTES

FlashArray Credentials - A global variable $Creds may be used as described in the release notes for this module. If neither is specified, the module will prompt for credentials.

Known Restrictions
------------------
1. This function does not work for databases associated with failover cluster instances.
2. This function cannot be used to seed secondary replicas in availability groups using databases in the primary replica.
3. The function assumes that all database files and the transaction log reside on a single FlashArray volume.

Note that it has dependencies on the dbatools and PureStoragePowerShellSDK modules which are installed as part of this module.
#>
    param(
        [parameter(mandatory = $true)] [string] $Database,
        [parameter(mandatory = $true)] [string] $SqlInstance,
        [parameter(mandatory = $true)] [string] $Endpoint
    )

    Get-Sdk1Module
    Get-DbaToolsModule

    $currentPrincipal = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())

    if ( ! $currentPrincipal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator) ) {
        Write-Error "This function needs to be invoked within a PowerShell session with elevated admin rights"
        Return
    }

    # Connect to FlashArray
    if (!($Creds)) {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials (Get-Credential) -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }
    else {
        try {
            $FlashArray = New-PfaArray -EndPoint $EndPoint -Credentials $Creds -IgnoreCertificateError
        }
        catch {
            $ExceptionMessage = $_.Exception.Message
            Write-Error "Failed to connect to FlashArray endpoint $Endpoint with: $ExceptionMessage"
            Return
        }
    }

    Write-Colour -Text "FlashArray endpoint       : ", "CONNECTED" -Color Yellow, Green

    try {
        $DestDb = Get-DbaDatabase -SqlInstance $SqlInstance -Database $Database
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to connect to destination database $SqlInstance.$Database with: $ExceptionMessage"
        Return
    }

    Write-Colour -Text "Target SQL Server instance: ", $SqlInstance, " - ", "CONNECTED" -Color Yellow, Green, Green, Green
    Write-Colour -Text "Target windows drive      : ", $DestDb.PrimaryFilePath.Split(':')[0] -Color Yellow, Green

    try {
        $TargetServer = (Connect-DbaInstance -SqlInstance $SqlInstance).ComputerNamePhysicalNetBIOS
    }
    catch {
        Write-Error "Failed to determine target server name with: $ExceptionMessage"
    }

    Write-Colour -Text "Target SQL Server host    : ", $TargetServer -ForegroundColor Yellow, Green

    $GetDbDisk = { param ( $Db )
        $DbDisk = Get-Partition -DriveLetter $Db.PrimaryFilePath.Split(':')[0] | Get-Disk
        return $DbDisk
    }

    try {
        $TargetDisk = Invoke-Command -ComputerName $TargetServer -ScriptBlock $GetDbDisk -ArgumentList $DestDb
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to determine the windows disk snapshot target with: $ExceptionMessage"
        Return
    }

    Write-Colour -Text "Target disk serial number : ", $TargetDisk.SerialNumber -Color Yellow, Green

    try {
        $TargetVolume = Get-PfaVolumes -Array $FlashArray | Where-Object { $_.serial -eq $TargetDisk.SerialNumber } | Select-Object name
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to determine snapshot FlashArray volume with: $ExceptionMessage"
        Return
    }

    $SnapshotSuffix = $SqlInstance.Replace('\', '-') + '-' + $Database + '-' + $(Get-Date).Hour + $(Get-Date).Minute + $(Get-Date).Second
    Write-Colour -Text "Snapshot target Pfa volume: ", $TargetVolume.name -Color Yellow, Green
    Write-Colour -Text "Snapshot suffix           : ", $SnapshotSuffix -Color Yellow, Green

    try {
        New-PfaVolumeSnapshots -Array $FlashArray -Sources $TargetVolume.name -Suffix $SnapshotSuffix
    }
    catch {
        $ExceptionMessage = $_.Exception.Message
        Write-Error "Failed to create snapshot for target database FlashArray volume with: $ExceptionMessage"
        Return
    }
}
#endregion

#### END DBATOOLS FUNCTIONS

#### End Exported Functions

# Declare Exports
Export-ModuleMember -Function Get-AllHostVolumeInfo
Export-ModuleMember -Function Set-WindowsPowerScheme
Export-ModuleMember -Function Get-HostBusAdapter
Export-ModuleMember -Function Register-HostVolumes
Export-ModuleMember -Function Unregister-HostVolumes
Export-ModuleMember -Function Get-QuickFixEngineering
Export-ModuleMember -Function Test-WindowsBestPractices
Export-ModuleMember -Function New-VolumeShadowCopy
Export-ModuleMember -Function Get-VolumeShadowCopy
Export-ModuleMember -Function New-FlashArrayCapacityReport
Export-ModuleMember -Function Update-DriveInformation
Export-ModuleMember -Function Sync-FlashArrayHosts
Export-ModuleMember -Function Get-FlashArraySerialNumbers
Export-ModuleMember -Function New-HypervClusterVolumeReport
Export-ModuleMember -Function Set-TlsVersions
Export-ModuleMember -Function Get-MPIODiskLBPolicy
Export-ModuleMember -Function Set-MPIODiskLBPolicy
Export-ModuleMember -Function Get-FlashArrayStaleSnapshots
Export-ModuleMember -Function Get-FlashArrayDisconnectedVolumes
Export-ModuleMember -Function Get-FlashArraySpace
Export-ModuleMember -Function Get-FlashArrayPGroupsConfig
Export-ModuleMember -Function Remove-FlashArrayPendingDeletes
Export-ModuleMember -Function Get-FlashArrayConfig
Export-ModuleMember -Function Get-FlashArrayHierarchy
Export-ModuleMember -Function Get-PfaSerialNumbers
Export-ModuleMember -Function New-FlashArrayDbSnapshot
Export-ModuleMember -Function Invoke-DynamicDataMasking
Export-ModuleMember -Function Invoke-StaticDataMasking
Export-ModuleMember -Function Invoke-FlashArrayDbRefresh
Export-ModuleMember -Function Get-WindowsDiagnosticInfo
Export-ModuleMember -Function Get-FlashArrayRASession
Export-ModuleMember -Function Get-FlashArrayQuickCapacityStats
Export-ModuleMember -Function New-FlashArrayPGroupVolumes
Export-ModuleMember -Function Get-FlashArrayVolumeGrowth
Export-ModuleMember -Function Get-FlashArrayConnectDetails
Export-ModuleMember -Function Restore-PfaPGroupVolumeSnapshots
Export-ModuleMember -Function New-FlashArrayExcelReport

# END