Veeam backup of PVE vm on spinning disks ceph issues

[squebel]

Hello, case 08166423 is open with Veeam support. We are running 12.3 and plugin version 1.5 and we have a couple of PVE clusters running Proxmox CEPH but using a hybrid setup with spinning disks. In some situations, the snapshot that Veeam is creating of that vm is causing major IO performance issues. I am being asked to immediately upgrade to the latest version hoping that it will fix the issue. Is there anything in the newer version and plugin that fundamentally changes the way a PVE vm backups are run?

[vnikiforov]

Hello,

No - the general backup flow is the same. The upgrade advice still stands, though. V12 passed End of Fix in November 2025 under the product lifecycle policy, so bug fixes now ship on V13.1+ only, and there were snapshot handling changes between PVE plugin versions.
With 13.1 expected in the coming weeks, I'd go straight to that. If the IO impact reproduces on the latest version, open a new support case with new logs from a new version.