PowerProtect Data Manager: NAS incremental backup fails with error code MON0049

Summary: This article addresses a failure scenario in PowerProtect Data Manager where NAS incremental backups fail with error code MON0049. The issue typically occurs during the Snapshot & Crawl phase and may be related to data inconsistencies or previous backup states. ...

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Symptoms

  • NAS incremental backup fails in PowerProtect Data Manager.
  • Error seen:
MON0049: The activity was not updated for an extended period of time and has been canceled.
  • Failure consistently occurs during the Snapshot & Crawl phase.
  • The job fails at approximately the same Slice-Processed Byte count each time.

Cause

Error MON0049 indicates a timeout due to inactivity in the backup process. The consistent failure point suggests a possible issue with:

  • The previous backup copy
  • The NAS data itself
  • For PowerScale NAS appliances, a snapshot discrepancy may occur if ChangeFileList is enabled for the asset

Resolution

Perform a manual Full backup of the affected asset. This typically resolves the issue and allows subsequent incremental backups to complete successfully.

If the problem persists, review the asset configuration and consult with Dell Technical Support for deeper analysis.

Affected Products

PowerProtect Data Manager
Article Properties
Article Number: 000388268
Article Type: Solution
Last Modified: 24 May 2026
Version:  3
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