Using Deduplication › Back up Data with Deduplication › How Staging Jobs Work with Deduplication › How to Back Up Deduplication Devices

How to Back Up Deduplication Devices

The index and data files produced during a deduplication backup job are critical to successfully restoring deduplicated data. If these files should become corrupt, Arcserve Backup will not be able to find and reassemble the data chunks needed to rebuild the original data stream, even if the deduplicated data is intact. You can back up deduplication device files, but there are some important considerations you should first understand.

• Deduplication device files are normally skipped in local backup jobs (deduplication device and Arcserve Backup are on the same machine). However, you can forcibly include them by opening Global Options and enabling "Back up deduplication device data/ UDP RPS datastore data" on the Operation tab.
• Deduplication device files are normally included in remote backup jobs (deduplication device and Arcserve Backup on different machines). In addition, the data deduplication files can reside on the same or different remote computers. Backup does not collect the data from Deduplication devices that are on multiple computers to maintain data consistency. However, the data and index files may not be synchronized if other backup jobs to the deduplication device are running at the same time while the deduplication device is being backed up. We therefore require licensing the Arcserve Backup Agent for Open Files and using deduplication devices on computers that support VSS. For more information, see Back up Deduplication Device Files.
• To back up deduplication device files, you must license the Agent for Open Files.

For information about how to restore deduplication devices, see Restore Deduplication Device Files.