6.0

2 (Optional) On the Placement Recommendations tab, deselect any recommendations you do not want to
apply.
NOTE The datastore cannot enter maintenance mode without evacuating all disks. If you deselect
recommendations, you must manually move the affected virtual machines.
3 If necessary, click Apply Recommendations.
vCenter Server uses Storage vMotion to migrate the virtual disks from the source datastore to the
destination datastore and the datastore enters maintenance mode.
The datastore icon might not be immediately updated to reflect the datastore's current state. To update the
icon immediately, click Refresh.
Ignore Storage DRS Affinity Rules for Maintenance Mode
Storage DRS affinity or anti-affinity rules might prevent a datastore from entering maintenance mode. You
can ignore these rules when you put a datastore in maintenance mode.
When you enable the Ignore Affinity Rules for Maintenance option for a datastore cluster, vCenter Server
ignores Storage DRS affinity and anti-affinity rules that prevent a datastore from entering maintenance
mode.
Storage DRS rules are ignored only for evacuation recommendations. vCenter Server does not violate the
rules when making space and load balancing recommendations or initial placement recommendations.
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 In the right pane of the Edit Datastore Cluster dialog box, select SDRS Automation.
3 Click Advanced Options.
4 Select IgnoreAffinityRulesForMaintenance.
5 In the Value column, type 1 to enable the option.
Type 0 to disable the option.
6 Click OK.
The Ignore Affinity Rules for Maintenance Mode option is applied to the datastore cluster.
Applying Storage DRS Recommendations
Storage DRS collects resource usage information for all datastores in a datastore cluster. Storage DRS uses
the information to generate recommendations for virtual machine disk placement on datastores in a
datastore cluster.
Storage DRS recommendations appear on the Storage DRS tab in the vSphere Client datastore view.
Recommendations also appear when you attempt to put a datastore into Storage DRS maintenance mode.
When you apply Storage DRS recommendations, vCenter Server uses Storage vMotion to migrate virtual
machine disks to other datastores in the datastore cluster to balance the resources.
You can apply a subset of the recommendations by selecting the Override Suggested DRS
Recommendations check box and selecting each recommendation to apply.
vSphere Administration with the vSphere Client
372 VMware, Inc.