Operational Defect Database

BugZero found this defect 768 days ago.

Veeam | kb4301

SureBackup VM Power On fails with: "Failed to extend swap file" or "Error: Insufficient resources."

Last update date:


Affected products:

Veeam Backup & Replication

Affected releases:


Fixed releases:

No fixed releases provided.



A SureBackup job, for a VMware environment, fails during the VM Power On step with either of the following errors:


This issue occurs when the Instant recovery write cache folder has insufficient space.


Determine which Repository contains the backup files for the VM that is failing to power on. Edit that Repository, and on the Mount Server tab, you will find the assigned Mount Server and Instant recovery cache folder path. Now you may either: Connect to the Mount Server and ensure sufficient free space on the drive where the Instant recovery cache is located.or Assign a different Mount Server and Instant recovery write cache location with sufficient free space.

More Information

It is strongly advised to enable the "Redirect write cache" option within the Virtual Lab settings. Enabling this option will allow the SureBackup job to store the redo logs for each VM on the specified datastore instead of the Mount Server. Some files will still be stored in the Mount Server's Instant Recovery cache, but the space needs are significantly reduced. Additionally, redirecting the write cache to a datastore improves SureBackup performance.

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