About the MSDP shadow catalog
The NetBackup Deduplication Manager automatically creates a shadow copy of the catalog daily. The Deduplication Manager also builds a transaction log for each shadow copy. If NetBackup detects corruption in the MSDP catalog, the Deduplication Manager restores the catalog automatically from the most recent shadow copy. That restore process also plays the transaction log so that the recovered MSDP catalog is current.
By default, the NetBackup Deduplication Manager stores the shadow copies on the same volume as the catalog itself. Veritas recommends that you store the shadow copies on a different volume.
Warning:
You can change the path only during initial MSDP configuration only. If you change it after MSDP backups exist, data loss may occur.
See Changing the MSDP shadow catalog path.
The NetBackup Deduplication Manager creates a shadow copy at 0340 hours daily, host time. To change the schedule, you must change the scheduler definition file.
See Changing the MSDP shadow catalog schedule.
By default, the NetBackup Deduplication Manager keeps five shadow copies of the catalog. You can change the number of copies.