I have installed Windows 7 64, Windows 7 32 and WHS 2011 on a D2700 Atom board and it is very slow on the installs and updates. Saying that, actually using the machine as a file server is fine.
Note that, with this generation at least, Intel is not supporting 64bit OSs, mainly due to issues getting 64bit drivers for the incorporated chipset.
More or less any mITX board with an i3 or even possibly GXXX and up should be fine. Look at the S1200KP mITX workstation board if you want ECC ram and the ability to run a Xeon E3 as well as an i3 or Gxxx and even non-ECC ram. There is one on Amazon for around US$175 at the moment.
I run WHS 2012, Windows SBS 2011 and various other VMs on an E3-1230 via vSphere but mileage obviously depends on what people want to do with the installed servers.
RB
Note that, with this generation at least, Intel is not supporting 64bit OSs, mainly due to issues getting 64bit drivers for the incorporated chipset.
More or less any mITX board with an i3 or even possibly GXXX and up should be fine. Look at the S1200KP mITX workstation board if you want ECC ram and the ability to run a Xeon E3 as well as an i3 or Gxxx and even non-ECC ram. There is one on Amazon for around US$175 at the moment.
I run WHS 2012, Windows SBS 2011 and various other VMs on an E3-1230 via vSphere but mileage obviously depends on what people want to do with the installed servers.
RB