Upgrade to Veeam v11 or v12, which use 64-bit block addressing for CBT. Alternatively, switch to Direct SAN or Network mode (slower, but avoids the overflow).
To avoid overflow errors in modern environments: veeam backup and replication overflow error
Contact support for a private fix. You may need to manually delete objects from your storage (e.g., using QNAP utilities or AWS S3 console) before re-synchronizing the Scale-Out Backup Repository (SOBR) . 4. Interface/Graphical Overflow Upgrade to Veeam v11 or v12, which use