6.5.1

5 Expand DRS Automation.
a Select an automation level.
b Set the Migration threshold.
Use the Migration slider to select the priority level of vCenter Server recommendations that adjust
the cluster's load balance.
c Select whether to enable Virtual Machine Automation.
Override for individual virtual machines can be set from the VM Overrides page.
6 Expand Power Managment.
a Select an automation level.
b Set the DPM threshold.
Use the DPM slider to select the power recommendations that vCenter Server will apply.
7 Type a Task name.
8 Type a description of the Task you have created.
9 Under Congured Scheduler, click Change and select the time for the task to run and click OK.
10 Type an email address to send a notication email to when the task is complete.
11 Click OK.
The scheduled task runs at the specied time.
Storage DRS Anti-Affinity Rules
You can create Storage DRS anti-anity rules to control which virtual disks should not be placed on the
same datastore within a datastore cluster. By default, a virtual machine's virtual disks are kept together on
the same datastore.
When you create an anti-anity rule, it applies to the relevant virtual disks in the datastore cluster. Anti-
anity rules are enforced during initial placement and Storage DRS-recommendation migrations, but are
not enforced when a migration is initiated by a user.
N Anti-anity rules do not apply to CD-ROM ISO image les that are stored on a datastore in a
datastore cluster, nor do they apply to swaples that are stored in user-dened locations.
Inter-VM Anti-Affinity
Rules
Specify which virtual machines should never be kept on the same datastore.
See “Create Inter-VM Anti-Anity Rules,” on page 102.
Intra-VM Anti-Affinity
Rules
Specify which virtual disks associated with a particular virtual machine must
be kept on dierent datastores. See “Create Intra-VM Anti-Anity Rules,”
on page 103.
If you move a virtual disk out of the datastore cluster, the anity or anti-anity rule no longer applies to
that disk.
When you move virtual disk les into a datastore cluster that has existing anity and anti-anity rules, the
following behavior applies:
n
Datastore Cluster B has an intra-VM anity rule. When you move a virtual disk out of Datastore
Cluster A and into Datastore Cluster B, any rule that applied to the virtual disk for a given virtual
machine in Datastore Cluster A no longer applies. The virtual disk is now subject to the intra-VM
anity rule in Datastore Cluster B.
Chapter 13 Using Datastore Clusters to Manage Storage Resources
VMware, Inc. 101