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SAS/SCSI Naming

By LoBue on May 03, 2011

Industry Standard
(STA Terms)
T10 Spec Maximum Bus Speed Bus Width
(# of bits)
SCSI-1 SCSI-1 5 MB/s 8
Fast SCSI SCSI-2 10 MB/s 8
Fast Wide SCSI SCSI-3 20 MB/s 16
Ultra SCSI SPI 20 MB/s 8
Wide Ultra SCSI SPI 40 MB/s 16
Ultra2 SCSI SPI-2 40 MB/s 8
Wide Ultra2 SCSI SPI-2 80 MB/s 16
Ultra3 SCSI or Ultra160 SCSI SPI-3 160 MB/s 16
Ultra320 SCSI SPI-4 320 MB/s 16
3Gb/s SAS SAS-1
& SAS-1.1
3Gb/s Serial
6Gb/s SAS SAS-2,
SAS-2.1
& SPL
6Gb/s Serial