naslite (Score 2, Informative)

Naslite (free version) worked great on my salvaged P-100 32MB system running quiety and headless with nothing but a floppy drive and a 300GB HD. Luckily, it recognized the large HD (since Linux/etc bypasses bios) and I didn't need an IDE card. Performance was acceptable (good but not great) for small base of users but I wouldn't want to stick a RAID in it or have more than 5 nodes. The total system consumed total of 25-30watts (a little high compared to NSLU). Freenas looked good except for higher amount of ram(96m which I didn't have.