diff --git a/install_config/install/prerequisites.adoc b/install_config/install/prerequisites.adoc
index d8f65e8b34e2..61c6473f4099 100644
--- a/install_config/install/prerequisites.adoc
+++ b/install_config/install/prerequisites.adoc
@@ -79,7 +79,11 @@ back end; see xref:configuring-docker-storage[Configuring Docker Storage]
 below.
 
 |External etcd Nodes
-|Minimum 20 GB hard disk space for etcd data.
+a| * Horizontally scale etcd based on fault tolerance needs; a minimum etcd cluster size of 3 is recommended. 
+* Separate the etcd service from other services (the masters) onto dedicated VMs.
+* Provide resources sufficient to handle the workload: 6 vCPUs, 64 GB RAM, 50-100 GB of disk space.
+* Recommend aggressive object pruning, so that the etcd cluster only contains objects that are in use. Pruning should occur during off-peak hours. Monitor and reduce the number of image layers that are being produced. 
+
 |===
 
 [IMPORTANT]