NO, the HP does not run a generic NIC, as I replaced it with PCI-e Intel version, so I can get jumbo frames (the on-board Broadcom does not have jumbo frames)
And what is wrong with software RAID?
I am sure that specialized device will outperform, but 25Mb/s I can get on USB2
On same hardware HP Microserver (with same drives, also softrware RAID, and even on-board Broadcom, as I did not yet swap it) with Openfiler 2.3 I can get FTP writes of excess 60 Mb/s
And yes, I have the latest available version of DSS 6
I do not expect miracle (like my Equallogic array), but twice the current speed would be more like what should be expected