About Instant Recovery
Standard NetBackup can use disks for backup and restore. The Instant Recovery feature of Snapshot Client extends that capability by exploiting the speed of snapshots. A snapshot is created with minimal effect on client access to data or on the speed of client transactions. If snapshots are made frequently, you can restore an accidentally deleted file in a matter of seconds.
Figure: Instant Recovery from snapshot on disk shows an example.
The on-disk snapshots become point-in-time versions of file systems or volumes, to be kept or discarded as needed. The data can be restored from local disk; no need to mount a tape or other remote storage.
NetBackup Instant Recovery creates snapshot A of the client data on disk. One hour later, as scheduled, NetBackup creates snapshot B, also on disk, followed one hour later with snapshot C. By using the appropriate snapshot, you can restore data directly from disk.
Note:
NetBackup Instant Recovery retains the snapshot. The snapshot can be used for restore even if the client has been restarted.
The following sections provide some background information.
See About snapshot and backup for Instant Recovery.
See About NetBackup catalog maintenance.