Verifying Tapes

There can be different reasons to verify you LTO tapes:

  • You want to check tapes before copying their data to new tapes.
  • LTO has great durability, but it is still limited, and in some time you need to change the tape media.
  • Compliance reasons.

Veeam Backup & Replication offers a simple, yet efficient means to verify that your tapes are correctly read in case of emergency.


Mind the following:

  • During the tape verification job, Veeam Backup & Replication only checks if the data on the tape can be read. It does not check the application consistency or infrastructure.
  • Verifying tapes in a virtual tape library makes no sense as in this case Veeam Backup & Replication will retrieve no check sums for data blocks.

Before starting a tape verification job, check the following prerequisites:

  • The tapes to verify must be online.
  • The tapes to verify must be cataloged. Tapes in the Unrecognized media pool are not available for tape verification. For more information, see Cataloging Tapes.
  • All tapes to verify must be decrypted. Encrypted tapes cannot be read. For more information on decryption, see Decrypting Tapes with Password.

Besides, mind that you cannot run tape verification for cleaning tapes and free tapes (tapes in the Free media pool).

To start the tape verification job:

  1. Open the Tape Infrastructure view.
  2. Navigate to the list of tapes either under Media Pools or under Libraries > LibraryName node > Media > Online.
  3. Select a tape you want to verify and click Verify Tape on the ribbon. Alternatively, you can right-click the selected tape and select Verify from the shortcut menu.

If you want to simultaneously use several drives for tape verification, successively start separate tape verification jobs for different tapes.

When writing backup files to tapes, there can be situations where a file does not fit on a tape. Then it is divided into parts and written to several tapes, which are then considered dependent. When verifying tapes, Veeam Backup & Replication checks data on selected tapes only. It does not check data on dependent tapes if they are not selected for verification.

To get an email report about the results of the tape verification job processing, enable notifications as described in Configuring Global Email Notification Settings. If there are too many issues reported after verification, the job session log in Veeam Backup & Replication UI displays only first 10 files with errors. For a full list of read errors with detailed paths and tape IDs, open the detailed report in the CSV format stored in the folder where tape verification job logs are stored. For convenience, the path to this folder is specified in the job session log in UI and in the email report.