This is my first OMV build and it's running fairly well except that the network performance degrades to about a 1/10 bandwidth after a few days. I'm **not** losing the network, and it's **not** always slow, just after some period of time. On a fresh boot, these are my benchmarks:
* iperf = 116 MB/s
* pv/smb = 104 MB/s
* rsync = 86 MB/s
I'm happy with that! However, when this problem occurs, they all drop -- so I think it is protocol independent.