http://commsdesign.com/main/art9706.htm "When (and How) Is a Protocol Standard? A diatribe on the trials and tribulations of standards development." article by Mike Rodbell. Tries to explain some non-technical features of the standardization process -- such as human ego, greed, and intellectual curiosity.
the T10 Technical Committee claims to be "This is the place to find more information about I/O Interfaces, especially Serial Attached SCSI (SAS), the Small Computer System Interface (SCSI), ... also pointers ... on Fibre Channel, ATA (IDE), and ATAPI."