I have one of these, I am not using it for an MD but a core.
So far it has been a bit of a trial to set up, as the realtek r8168 has issues with the DVD images for 810, but the net install method with the kubuntu live cd seems to resolve that.
Be aware that there are only 2 sata ports on the board, and a single pci slot as well as a minipci slot for a wireless card or maybe a broad com card. If you are going for a md I would look at an ion 330 based system, such as the acer revo 3610
We use an OEM variant of the AsRock 330 chassis in our NC30 small Core this works well if your only going to build a small system or just want something small to sit on the work bench to experiment with.
See the wiki page on the standard consumer AsRock 330 here http://wiki.linuxmce.org/index.php/AsRock_330_ION_HT
All the best