It was a thin client that ran embedded linux on a board. Plugged directly into the IDE port. BIOS would boot, hit the thin client on the first IDE port, and the embedded linux would take over. Cheapest, easiest way to build a herkin' NAS back before anyone was building NAS. I had 5 250GB drives back when 250GB drives were $200 per. And it provided ZFS, which everyone thought was badass, so I built the NAS ZFS. Because, after all, the thin client wasn't going to take a shit so why worry? Then the BIOS on the mobo took a shit and took the thin client with it. I had to build a fucking PC just to get my data out of it. Last time I ran RAID5 lemme tell ya.
Guess I'll be going for 2 separate disks then when setting up my next server (when I finally get to that).