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- An attempt to access data before the beginning-of-medium marker failed
An attempt to access data before the beginning-of-medium marker failed
| KB ID: | 2003 |
| Product: | Veeam Backup & Replication | 8.0 | 9.0 | 9.5 | 10 | 11 |
| Published: | 2015-02-05 |
| Last Modified: | 2021-05-12 |
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Challenge
During a tape related process in Veeam Backup & Replication the error “An attempt to access data before the beginning-of-medium marker failed” is thrown.
Cause
The most common cause of this is faulty tape.
Solution
If there is no content on the tape try erasing it, if the issue persists try a different tape. If the task is successful with a different tape, the tape that caused this error is most likely faulty.
For Veeam Backup & Replication builds [11.0.0.837] through [11.0.0.837 P20210401]
Tape positioning error: The end-of-data marker was reached during an operation
The error message shown above in this note, which appears similar to the error on this article but is different, may occur due to a known bug in Veeam Backup & Replication v11 builds:
- 11.0.0.837
- 11.0.0.837 P20210319
- 11.0.0.837 P20210324
- 11.0.0.837 P20210401
This issue is resolved in 11.0.0.837 P20210507 and later builds. Please update:
https://www.veeam.com/kb2680
If the issue persists after updating, please create a Support Case.
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