Let me say Hello to everyone.
The Support case which I had opened for my issue is: 01882484
So I will firstly describe my infrastructure and then my problem.
I have two Hyper-V servers which I will label for the clarify as HV1 and HV2. Additionally I have two Veeam Backup Servers. Veeam1 and Veeam2.
The Backup infrastructure is really easy. My Veeam1 which is installed on HV1 takes backups for VMs located on HV2 and then do replicas of this VMs from HV2 to HV1. For Veeam2 the thing is the same. Veeam2 is installed on HV2, takes backups of VMs located on HV1 and then do replicas from HV1 to HV2. Everything works fine. We don't have any problems.
But from the certain time we have problem with Veeam1. On such Backup Server the time for creating VSS Snapshot for each VM takes much of time. It is about 4 minutes and 41 sec
only for creating the snapshot... This time is very undesirable because now my backup job last about 35 minutes not as previous about 15-20 minutes... The closing snapshot time is longer than previously and it last about 2 minutes. For the comparison I of course have my Veeam2 and there the Creating VSS snapshot time is only 41 seconds
for each VM.
I tried to configure new backup job with only one VM and the result was the same. Unfortunately such issue can be observed only when Veeam1 takes backups of VMs from HV2 Server. When I Configure on Veeam1 Backup Job for VM from HV1 Server, the VSS snapshot time is OK. So I definitely can assume that the problem is related to the HV2 Server... I was restarted the VSS and HV VMM services but with no result. Finally I rebooted the whole HV2 Server at the Saturday evening and then the VSS Snapshot time was 41 seconds. But now (after couple of days) I can see that VSS snapshot time is growing. firstly it was 2 minutes, now it is 3 minutes...
Please see attached Screenshots:
Veeam1 with problem:
Veeam2 without problem: