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Pure Technical Services

Step 04 -- Disk Policy Configuration (SAN Policy)

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Please note the following when upgrading from Purity version 4.8.8 or earlier to a later version of Purity with Clustered Windows Hosts using Clustered Shared Volumes (CSVs). 

CSVs and OfflineShared disk policy

Regarding CSVs in a Cluster and a host that did own a volume going offline for a reboot:

The Cluster Manager Service manages disk connections for the cluster. One host will always have ownership of a volume ( although usually not all on the same host). The Cluster Manager service does a heartbeat check for volumes, and when a owner host of a CSV loses its volume access, the Cluster Manager will notice and automatically find a new owner host to online the volume, without manual intervention.