[markguy]

I saw that setup as well. They're currently sold out.

I was trying to piece that setup in Newegg but the motherboard and CPU were discontinued. Can anyone build a comparable system like that for that price or cheaper? I have no qualms building a PC myself (I enjoy it actually).

There's a couple of sections in the unRAID forums that you should definitely check out before buying any components. The Hardware and Motherboard forums, specifically. There's a list of the motherboards that are known to work with unRAID in the wiki as well (Hardware Compatibility page). Not finding the one you're thinking of buying isn't a terrible thing, but post and see if anyone else has had success before you get something shipped to you.

Oh and avoid any motherboard that enables HPA by default. That can (arguably certain to) cause subtle, infuriating problems with your array. Gigabyte boards are feared and reviled at the moment for this reason.

Also, they're not kidding when they say don't worry about CPU. Even memory doesn't make a huge difference, in my experience. Make sure you've got as many SATA ports as you get with PCI slots for SATA controller cards, assuming you want to get up towards the 22 drive limit. And note that when you have 22 drives stuffed in a case, you pretty much have to become an expert on air flow and cooling. You find more threads discussing SATA backplanes and cases than CPU and memory in the forums...