What about a Thecus YES Box? (Score 1)

Thecus 2100S (at newegg.com)

What about this thing? It sure is a hell of a lot cheaper than a Buffalo Terraserver (at $355 vs ~$800)
and seems to do what you want. It supports up to 1TB, has gigabit ethernet, uses SATA drives
and runs on an Xscale processor.

Nope, I don't work the company either. I'm just thinking about buying one for someone. (Disclaimer: I've
never used one of these, it just fits the specs...)