Do you have space for that chassis? 400mm (probably nearer 500mm to allow room for rear connections) must be cutting things close.
Yeah I feel you

Thinking about basing the Nas around one of these
http://www.msi.com/product/mb/C847MS-E33.html
Do you have space for that chassis? 400mm (probably nearer 500mm to allow room for rear connections) must be cutting things close.
Do you have space for that chassis? 400mm (probably nearer 500mm to allow room for rear connections) must be cutting things close.
If you could find room for it, a HP Microserver G7 would make more sense. Now that there's a new cashback offer they're only about £130.
The Microserver doesn't have any USB3.0 support out of the box.
Windows 8.1 is possible (it's running on mine), but at the moment you have to disable the on board NIC and add your own. Windows 8 didn't suffer from this problem. I'm not sure if/when there'll be a fix available.
The main advantage is that they support four 3.5" drives, and with a bit of work they'll support six.
That Acer looks fine, but only appears to support a single drive (or two if you remove the optical). If that's all you need I'd stick with the WDC My Cloud you mentioned originally.