We have an issue here with vSphere and VMware backup, which VMware support was not able to track down since weeks. Issue is tasks like reconfigure VM, taking snapshots, remove snapshots and others are taking a lot more time than before. Instead of updating notes with latest backup result in a second, it takes up to 10 minutes to do so. The issue is always pinned to one host, but it is wandering from one to another. Once restarting management agents on ESXi the issue goes away, and has not reappeared on a host which management agents were already restarted. Those hosts were running fine since weeks, and we were not able to pin down starting of this issue with any update or config change.
All hosts affected are on release 3380124 -> ESXi 6.0 Update 1b, Veeam is v126.96.36.1992. Hardware is HP, but different models of Gen8 and 9. I am almost sure this has nothing to do with Veeam, but during backup Veeam starts the mosts tasks, so Veeam is the primary victim of this issue.
Has anyone experienced such an issue before, and knows a solution?