Directory-level backup and restore operations

If you have a large NAS file system, initiating a backup at a directory level reduces backup and restore times and provides more flexibility in configuring NAS backups. By defining virtual file spaces, a file system backup can be partitioned among several NDMP backup operations and multiple tape drives. You can also use different backup schedules to back up subtrees of a file system.

The virtual file space name cannot be identical to any file system on the NAS node. If a file system is created on the NAS device with the same name as a virtual file system, a name conflict occurs on the Tivoli® Storage Manager server when the new file space is backed up. For instructions about issuing commands for mapping virtual file spaces, see DEFINE VIRTUALFSMAPPING (Define a virtual file space mapping).

Restriction: Virtual file space mappings are supported only for NAS nodes.