Error: Skipping VM processing due to insufficient free disk space on datastore
| KB ID: | 4379 |
| Product: | Veeam Backup & Replication | 10 | 11 |
| Published: | 2022-11-11 |
| Last Modified: | 2022-11-12 |
Challenge
A Backup or Replication job fails with the messages:
Production datastore <datastore_name> is getting low on free space (xx GB left), and may run out of free disk space completely due to open snapshots.
Error: Skipping VM processing due to insufficient free disk space on datastore <datastore_name>.
Cause
Solution
Please investigate the datastore size and relative free space and adjust the notifications setting as needed.
As the notifications are based on the percentage of free space and not a specific value, some environments with very large datastores may trigger these notifications sooner than expected. For example, with the default settings (warn=10%/skip=5%) in an environment with a 50TB datastore, the warning about free space will trigger when there is still 5TB of free space and begin skipping VMs at 2.5TB.
More Information
Even if the "Skip VMs when free disk is below " option is disabled, Veeam Backup & Replication will terminates jobs if the amount of free space on the datastore is below 2 GB. You can change this threshold limit with the registry value below.
Key Location: HKLM\SOFTWARE\Veeam\Veeam Backup and Replication\
Value Name: BlockSnapshotThreshold
Value Type: DWORD (32-Bit) Value
Value Data (Default): 2
The Value Data is measured in Gigabytes (GB).
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