I am now running the ESXi server (the one with Q6600; I have decided to sell the Phenom) with OMV as one of its VM. I am getting only 40MB/s instead of 80 to 90MB/s in Samba, which is quite unexpectedly bad (I think I got about 70 when using the Phenom ESXi server)
I am now considering using OMV baremetal and letting it become the hypervisor via VirtualBox. Will this let me still consolidate my IT stuff and also get better file transfer speeds?