Hyper-V Off-Host proxy performance very poor

[RuaanP]

Good day
I am using a Hyper-V Off-Host proxy which has a 100GB network connection directly to a HPE Alletra4140 storage array. The Off-Host proxy preferred network is set to use the 100Gb network for backup traffic and I can see that when the test job starts it does use this 100Gb link.
I have also installed the Hardware VSS provider on the Off-Host proxy and on the Hyper-V host where the test VM being backed up is running.
I have also changed the Hyper-V host managed volumes to use Hardware VSS provider.
The Off-Host backup proxy is working but the performance is very poor compared to using an On-Host proxy for the same job.
On-Host proxy job finishes in 8 minutes but when using the Off-Host proxy it finishes in 1 hour.
What I have noticed is that the 200GB disk has a much slower reading speed when using a Off-Host proxy compared to using the On-Host proxy. Not sure of this might be some guidance to resolve this problem.
Any help/advice will be much appreciated.

On-Host Proxy Backup:
2:14:47 PM Hard disk 1 (100 GB) 599 MB read at 124 MB/s [CBT] 00:07
2:14:47 PM Hard disk 2 (50 GB) 790 MB read at 138 MB/s [CBT] 00:07
2:14:47 PM Hard disk 3 (200 GB) 34.6 GB read at 189 MB/s [CBT] 03:11

Off-Host Proxy Backup:
4:55:39 PM Hard disk 1 (50 GB) 790 MB read at 12 MB/s [CBT] 01:09
4:55:39 PM Hard disk 2 (200 GB) 32.6 GB read at 9 MB/s [CBT] 01:03:39
4:55:39 PM Hard disk 3 (100 GB) 599 MB read at 12 MB/s [CBT] 00:52


Thanks

[Mildur]

Hi Ruaan,

Unfortunately, we can't assist with performance-related issues through a forum discussion. I recommend contacting our customer support team as the first step and having them investigating the log files. Based on their investigation, we can provide suggestions or escalate the case if necessary.

Best regards,
Fabian