This blog contains full instructions, including links and pictures of all hardware needed, to build a 1+ TB NAS. Windows XP is used as the software, while a Highpoint RocketRAID hardware RAID card takes care of the drives.
I did some research into building a network attached storage (NAS) server, and bought the appropriate hardware online. I’ll cover the steps I took to build a homebrew NAS server capable of offering 1Tb of redundant RAID 5 storage.
Related to mounting the drives in 5.25″ drive bays, Did you think about using a “hot swap sata enclosure”? I seem to remember the Highpoint controllers are compatible with hot swapping.