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Storage Foundation Cluster File System High Availability (SFCFSHA) allows cluster nodes to share access to the same file system. SFCFSHA is especially useful for sharing read-intensive data between cluster nodes.
Off-host backup of cluster file systems may be implemented by taking a snapshot of the volume containing the file system and performing the backup operation on a separate host.
Figure: System configuration for off-host file system backup scenarios shows an example where the primary volume that contains the file system to be backed up is configured on disks attached to controllers c1 and c2, and the snapshots are to be created on disks attached to controllers c3 and c4.
To set up an off-host cluster file system backup:
Mount a VxFS file system for shared access by the nodes of a cluster.
Prepare a snapshot of the mounted file system with shared access.
Back up a snapshot of a mounted file system with shared access
All commands require superuser (root) or equivalent privileges.
