SAS may refer to any of the following:
1. Short for Serial Attached SCSI, SAS is a serial transmission replacement for the parallel SCSI. SAS is an improvement of regular SCSI in that it allow up to 128 devices to be connected at the same time with transmission speeds of 3.0 Gb/s. SAS devices have two data ports and can communicate with both SCSI and SATA.
2. Short for Standalone Server, SAS is a server that does not rely on any other servers or services.
3. Abbreviation sometimes used to describe SUPERAntiSpyware.