Indeed, i just read the following KB : https://www.veeam.com/kb1877..
. and as we have a 1G link between our 2 sites, WAN accelerator will have no effect..
And yes, the aim is to have replication between our 2 sites with a 2 hours delay (our RPO is about 4h).
I was thinking about using Veeam Proxy on phyiscal servers on each sites.
But do you think this can help to reduce the time for replicating the primary site to the second one in the aim to have a DR plan ?
Regarding the NAS i think it was about the caching for the Wan Accelerators...but no matter..