Posted by Jayce Ooi as Hardware
SAS (Serial Attached SCSI) is a computer bus technology primarily designed for transfer of data to and from computer data storage devices such as hard drives, CD-ROM… It is a replacement for parallel SCSI. It is also backwards-compatible with SATA drives. It uses serial communication instead of the parallel method but still uses SCSI commands.
SAS (Serial Attached SCSI) vs parallel SCSI