HYPER-v off host backup proxy hp msa 2040

[cmarrec]

Hello, usually i use an hyper-v offhost backup proxy with a cluster 2012R2 and some san equallogic,
everything works fine and it's very perfect.

I'm trying to install an hyper-v offhost backup proxy in a new cluster of 3 nodes (2012R2) with a SAN HP MSA 2040.

i had installed a physical server with Hyper-v role installed (2008 R2) and configured access to the SAN luns
i had installed the vds/vss driver and proxy for all the nodes and the backup proxy
i had declare in veeam for the volume the VSS Provider to use
i had declare the backup proxy in veeam

when i backup a vm everything is ok (in onhost mode) but when i try to force offhost backup mode i had the error : unable to select backup proxy

when i read the log i've got the message :
[RTS] Failed to analyze snapshot availability.
[08.06.2017 17:01:02] <16> Error No off-host Hyper-V backup proxies are avaliable (System.Exception)

any idea ?

Thanks for your help

Cédric

[skrause]

For an off-host proxy to work with Hyper-V, the storage vendor needs to have a Hardware VSS provider. I am not that familiar with the MSAs but that would be the first place I would look.

[cmarrec]

The hardware VSS provider is installed and is working

I don't understand why the veeeam backup server can't used it

[foggy]

Hi Cedric, if everything looks configured properly, I recommend contacting support for a closer look at your setup. Thanks.