Recovery of the aged data is possible only when the data is available on the physical tape media. To retrieve the aged jobs, you must first try to unage the tapes or the jobs. If the unage operation fails, then perform CommCell Migration using the Disaster Recovery (DR) backup. If DR backup is not available, only then consider performing tape catalog as the last resort.
Tape catalog feature is useful in the following scenarios:
-
If the backup jobs are no longer available in the CommServe database, but the actual backup data is available on a tape.
-
If a storage policy, a client, a backup set or copy is deleted, but the actual backup data is available on a tape.
Note: If only the subclient is deleted, there is no need to tape catalog. The data is still restorable from the backup set.
-
If the disaster recovery backup data of a CommCell is available on a tape and the CommCell is not functional, you can recover the required disaster recovery backup data and make it accessible from another CommServe.
-
If the database does not contain any records of the backup jobs performed after a disaster recovery backup, due to the database that was restored being older than the backup jobs on the media and thus having no information about those jobs.
Notes:
-
Since aged data does not exist on disk, tape catalog feature is used to recover aged data on tapes only.
-
Before attempting a tape catalog operation, try to access the aged data first, as there is a chance that the data still exists in the CommCell.
Support
-
Supported Platforms: Windows and Linux
-
Supported Agents:
-
File System
-
VMware (supported only for recovering missing jobs and missing Storage Policies with primary copy)
-
-
Supported Libraries: Libraries with barcode readers.
Note
Stand-Alone libraries from foreign media is not supported.