This article is from the storage FAQ part2, by Rodney D. Van Meter with numerous contributions by others.
You're in the primary one (comp.arch.storage). You'll also find info in the groups on SCSI, PC hardware, and specific operating systems. I'll try to add pointers to their FAQs soon. The FAQ for comp.sys.ibm.pc.hardware.storage can be found at http://thef-nym.sci.kun.nl/~pieterh/storage.html.