Use pgAdmin to run a VACUUM ANALYZE on the Veeam database to reclaim storage and update statistics.
This "mismatch" indicates a discrepancy between the information in the Veeam Backup & Replication configuration database and the metadata stored in the object storage repository. This may happen after upgrading Veeam or following storage-level changes.
Older versions of software or specific database columns use 32-bit integers, which cap out at a value of 2,147,483,647.
A heavily fragmented Veeam Backup SQL or PostgreSQL database can miscalculate identity column increments. Step-by-Step Troubleshooting and Resolution veeam backup and replication overflow error
If you are currently facing this issue, I can help you find a specific fix. Please tell me: What are you running? What is the exact error message from your logs?
Run a VACUUM FULL command on the database via pgAdmin to reclaim space and reset internal transaction ID counters. Step 3: Implement Registry Registry Adjustments
: If the issue persists after an OS migration (e.g., to Windows Server 2019), a clean reinstall of the B&R console may be required. 3. SQL Database Overflow ( SqlDateTime Use pgAdmin to run a VACUUM ANALYZE on
If a backup chain is extremely long (e.g., hundreds of increments without a synthetic full), the metadata tracking those blocks can overflow the allocated system memory or file system boundaries. 3. VSS and Snapshot Overflows
: When using features like WAN acceleration, the console may display an "Arithmetic Overflow Error" accompanied by impossible transfer rates—sometimes reaching hundreds of thousands of GBps. This was a known bug in older versions (like v10) and is typically resolved by updating to the latest patch or Veeam Backup & Replication version. 2. Snapshot Overflow (Storage Limits)
If you see an error referencing System.Drawing.Graphics.CheckErrorStatus , it is often a visual bug rather than a backup failure. Older versions of software or specific database columns
: Frequently seen when using WAN acceleration or when clicking on specific replication jobs in older versions. System Drawing Overflow
Create or modify the following DWORD parameters based on your specific log findings (consult Veeam Support before applying):
: Long, unbroken forward-incremental chains generate massive metadata overhead. Schedule weekly or monthly Active Full backups to reset the tracking chain and clear out legacy metadata.
Users have reported these errors specifically when using WAN acceleration .