Basically, its anything that FreeBSD can run on (and that's a lot, on its own: http://www.freebsd.org/releases/9.2R/hardware.html http://www.freebsd.org/release

Basically, its anything that FreeBSD can run on (and that's a lot, on its own: http://www.freebsd.org/releases/9.2R/hardware.html http://www.freebsd.org/releases/9.2R/hardware.html) and that will at the same time fill your needs (in terms of platform architecture, power consumption, number of available/supported IO/storage options, size and so on). If you're still unsure, there's a great community and forum available, and some general hardware guide can be found here (it covers entire NAS appliance): http://forums.freenas.org/threads/so-you-want-some-hardware-suggestions.12276/ http://forums.freenas.org/threads/so-you-want-some-hardware-...