I'm backing up a few hyper-v 2008R2 hyper-v servers (Veeam 18.104.22.1681) and I can't go beyond 3 or 4 simulatenous VM taks per host.
I tried to increase the repository limits, increase the concurrent task at the host level and increase the snapshot limit in the datastore confiration for each host (all these changes in the backup infrastructure node)
I also increased the registry key introduced in R2 with no luck.
No matter what, I can't have more than 4 vms per hyper-v host backing up a the same time.
The queued machines says either "resource not ready snapshot" or "waiting hyper-v proxy"
Is any other limit I'm not aware of?