Hi,
I've just built an unRAID server so thought I would share the hardware I'm using as setup wise it has worked flawlessly. Obviously I need to leave it for a couple of weeks to make sure it remains stable but the fact it is booting fine is a good sign
Motherboard: ASUS M3N-HD/HDMI nForce 750a SLI - 2x 16xPCI-E, 2x 1xPCI-E, 6-SATA with USB Booting, HDMI and VGA output (Onboard Graphics)
CPU: AMD 4850e X2
RAM: Corsair 2x1GB 4-4-4-12
Hard Drives: 2x 1TB WD Caviar Green, 1x 500GB WD
USB Stick: Freecom DataBar 8GB
The case used was a Silverstone KL01 as a) looks nice b) provides accessible drive bays down the full front of the case (lots of room for Icy Dock caddys). The Freecom USB stick isn't the fastest but thats not too important I guess.
I'm currently running unRAID 4.4.2 with BubbaRAID. The only initial problem I had was that I couldnt get the Realtek NIC to work but that appears to be because I forgot to name the flash drive