What to back up
Back up the following to protect all data in the cluster, including file systems and databases:
Local disks on each node.
All disks that attach to the shared SCSI bus.
Virtual servers, which may contain data or contain database applications. Use NetBackup database agents to back up databases.
In WSFC and VCS for Windows clusters, also be sure to back up the System State and Shadow Copy Components on each node. For WSFC clusters, you must also back up the cluster quorum. The cluster quorum contains recovery information for the cluster and information about changes to the cluster configuration. The cluster quorum is included in the System State or Shadow Copy Components backup.