I bought the parts surplus, piece by piece–first the Intel server board; STL2, then memory, two Pentium III processors and finally, an Intel server case (SC5000). The tower case from Intel was huge and designed to match the STL2 board to ultimately complete the system for a full blown RAID server if desired. Naturally I had to find the companion RAID controller for it to test it out, an Intel SRCU-31 bought on Ebay. It is a PCI card that augmented the SCSI controller already on the server.
Once set up, you could create Raid 0, 1, 5 and 10 volumes, and with the five full hard drive bays, could store a lot of data. I got the courage to get it working again recently and attempt to sell on eBay here: Ebay $99 US.