About NetBackup catalog recovery from disk devices
In a catalog recovery, the disk media IDs in the recovery environment may differ from the disk media IDs in the backup environment. They may differ in the following uses cases:
The storage devices are the same but the NetBackup primary server installation is new. A primary server host or disk failure may require that you install NetBackup. Configuring the devices in NetBackup may assign different disk media IDs to the disk volumes than were assigned originally.
The disk storage devices are different than those to which the catalog backups were written. It may be in the same environment after storage hardware failure or replacement. It may be at another site to which you replicate the catalog backups and the client backups. Regardless, the catalog backups and the client backups reside on different hardware. Therefore, the disk media IDs may be different.
In these scenarios, NetBackup processes the disk media IDs so that the catalog may be recovered. The processing maps the disk media IDs from the backup environment to the disk media IDs in the recovery environment.
This processing occurs when the catalog backup resides on one of the following storage types:
An AdvancedDisk disk pool
A (MSDP)
An OpenStorage device