Verification of Deduplicated Data

Deduplicated Data Verification cross-verifies the unique data blocks on disk with the information contained in the DDB and the CommServe database. Verifying deduplicated data ensures that all jobs that are written as unique data blocks to the storage media are valid for restore or Auxiliary Copy operations.

The jobs containing invalid data blocks are marked with the Failed status. These invalid unique data blocks will not be referenced by the subsequent jobs. As a result, new baseline data for the invalid unique data blocks is written to the storage media.

For storage policies with silo copy, if the backup data volumes are moved to silo storage, the necessary volumes are automatically restored to disk during data verification job.

Tip: By default the system created data verification schedule policy is not configured with such data mover MediaAgents that are using a cloud library because the read operations from cloud are very slow and are not cost effective.

By default, the deduplicated data verification is automatically associated with the System Created DDB Verification schedule policy. This schedule policy runs an incremental deduplicated data verification job every day at 11:00 AM on all the active DDBs in the CommCell that have the Verification of Existing Jobs on Disk and Deduplication Database check box selected. However, you can also run the data verification job at any time.


Last modified: 6/27/2019 6:48:43 PM