Veritas FlashSnap Point-In-Time Copy Solutions 5.0.1 Administrators Guide, HP-UX 11i v3, First Edition, November 2009

Off-host cluster file system

backup

This chapter includes the following topics:

■ About off-host cluster file system backup

■ Mounting a file system for shared access

■ Using off-host processing to back up cluster file systems

About off-host cluster file system backup

Veritas Cluster File System (CFS) allows cluster nodes to share access to the same

file system. CFS 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 4-1 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.

You can mount a VxFS file system for shared access by the nodes of a cluster.

See “Mounting a file system for shared access” on page 54.

You can perform off-host backups of cluster-shared file systems.

See “Using off-host processing to back up cluster file systems” on page 55.

Note: All commands require superuser (root) or equivalent privileges.

Chapter