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In a clustered environment such as Hyper-V, a workload might span multiple CSVs. Time consistency of snapshots and replication becomes vital in recovery scenarios. Use volume groups in PowerStore to ensure time consistency.
Run the Create Volume Group wizard in PowerStore to create a volume group. The Apply write-order consistency to protect all volume group members option is selected by default. Keep this default to ensure that PowerStore protection policies (snapshot rules, replication rules, and remote backup rules) apply to all volumes in the group simultaneously.
You can add new or existing volumes to a volume group. For a multi-appliance PowerStore cluster, volumes added to a volume group must all reside on a common appliance.
If a volume is not on a common appliance, migrate the volume to the same appliance as the other volumes in the cluster.
When the migration is complete, you can group the volume with the other volumes, and the wizard will finish without errors. Protection policies (snapshot rules and replication rules) assigned at the volume-group level apply automatically to all new and existing volumes in the group. If a volume-group protection policy includes a replication rule, it might require significant time for initial replication to complete if the volumes contain significant data.