Enabling vSphere DRS on a cluster
You can enable the vCenter Server to distribute the virtual machines across multiple ESXi hosts based on their resource requirements. To achieve this you need to enable vSphere Distributed Resource Scheduler (DRS) on the cluster.
How to do it…
The following procedure explains how to enable DRS on a cluster:
From the vCenter's inventory home navigate to the Hosts and Clusters view.
Select the cluster and navigate to Manage | Settings | vSphere DRS and then click on Edit….
On the Edit Cluster Settings window, select the Turn ON vSphere DRS checkbox. Leave DRS Automation, Power Management, and Advanced Options at their defaults for now.
Click on OK to enable DRS.
The cluster's settings page should now show DRS enabled. It should read vSphere DRS is Turned ON.
How it works…
So how does DRS really work? DRS, once enabled, will aggregate the resources from the participating ESXi hosts as cluster resources.
Its job is to load-balance the DRS cluster for better utilization...