Ensure your Veeam Proxies and Repositories are capable of handling the data flow.
"Failed to process [VM Name] Error: Overflow error." Or: "System.OverflowException: Arithmetic operation resulted in an overflow."
The source machine (often Linux) lacks enough space to temporarily store snapshot files while the backup is running. It can also happen if changes are written to the disk faster than they can be recorded in the delta file. Check Source Space: veeam backup and replication overflow error
While Veeam has improved its handling of large data sets, arithmetic overflows can still occur due to a few key factors: 1. WAN Acceleration Issues
Solving the Veeam Backup and Replication Overflow Error: A Comprehensive Guide Ensure your Veeam Proxies and Repositories are capable
Look for specific mentions of System.OverflowException or database driver errors.
Follow this diagnostic ladder sequentially. Do not skip steps. Check Source Space: While Veeam has improved its
Restart services and the backup repository from the Veeam console.
: Update to the latest cumulative patch (e.g., v10a or higher resolved many instances of this).
Run:
SELECT name, Auto_Seed, Auto_Increment, Max_Value FROM sys.identity_columns WHERE object_id = OBJECT_ID('Backup.Model.BackupSessions')