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Table Of Contents
Enable and Disable Storage DRS
Storage DRS allows you to manage the aggregated resources of a datastore cluster. When Storage DRS is
enabled, it provides recommendations for virtual machine disk placement and migration to balance space
and I/O resources across the datastores in the datastore cluster.
When you enable Storage DRS, you enable the following functions.
n
Space load balancing among datastores within a datastore cluster.
n
I/O load balancing among datastores within a datastore cluster.
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Initial placement for virtual disks based on space and I/O workload.
The Enable Storage DRS check box in the Datastore Cluster Settings dialog box enables or disables all of
these components at once. If necessary, you can disable I/O-related functions of Storage DRS independently
of space balancing functions.
When you disable Storage DRS on a datastore cluster, Storage DRS settings are preserved. When you enable
Storage DRS, the settings for the datastore cluster are restored to the point where Storage DRS was disabled.
Prerequisites
Launch the vSphere Client and log in to a vCenter Server system.
Procedure
1 In the vSphere Client inventory, right-click a datastore cluster and select Edit Settings.
2 Click General.
3 Select Turn on Storage DRS and click OK.
4 (Optional) To disable only I/O-related functions of Storage DRS, leaving space-related controls enabled,
perform the following steps.
a Select SDRS Runtime Rules.
b Deselect the Enable I/O metric for Storage DRS check box.
5 Click OK.
Set the Automation Level for Datastore Clusters
The automation level for a datastore cluster specifies whether or not placement and migration
recommendations from Storage DRS are applied automatically.
Prerequisites
Launch the vSphere Client and log in to a vCenter Server system.
Procedure
1 In the vSphere Client inventory, right-click a datastore cluster and select Edit Settings.
2 Select SDRS Automation.
3 Select an automation level.
Manual is the default automation level.
Option Description
No Automation (Manual Mode)
Placement and migration recommendations are displayed, but do not run
until you manually apply the recommendation.
Fully Automated
Placement and migration recommendations run automatically.
Chapter 25 Resource Management for Single Hosts
VMware, Inc. 369