Backing Up Data › Backup Staging Methods › How Backup to Disk to Tape Works › How You Can Manage Staged Data When the Database Fails

How You Can Manage Staged Data When the Database Fails

When you use disk staging to back up data, the information about the backup jobs, sessions, staging policies, and so on is stored in the Arcserve Backup database. If the database fails, and you need to recover the Arcserve Backup database, the staging policies for the data residing on the staging device (for example, a file system device or a library) that specify when to copy the data to the final destination media and, if file system device (FSD), when to purge the data from the staging device are no longer available.

If this situation occurs:

• Arcserve Backup cannot copy (migrate) the data on staging device to its final destination media.
• Arcserve Backup cannot purge data from a file system device (FSD) to reclaim disk space. As a result, future backup jobs will probably fail due to an insufficient amount free disk space on the staging device.

To remedy this situation and retain all of the backup data that is stored on the staging device, you can use the tapecopy command line utility to copy all the backup data from the staging device to final destination media. (When you use this approach, media rotation rules, such as Friday tape or Monday tape may not be adhered to.) Then, you can use the -purge option from the Device Manager command line utility (ca_devmgr) to delete the data from the FSD and reclaim disk space.