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Use a consistent LUN number when mapping shared volumes: quorum disks, cluster disks, and cluster shared volumes. Use host groups on the PowerStore array to simplify the task of assigning consistent LUN numbers.
Note: Hyper-V hosts that use boot-from-SAN cannot be added to PowerStore hosts groups.
Changing LUN IDs after initial assignment by PowerStore might be necessary to make them consistent. By default, PowerStore Manager assigns the next available LUN ID that is common when mapping a new volume to a host group or group of hosts.