A
Introduction to SAS
In this appendix...
Terminology Used in This Chapter ....................................................................................... 68
What is SAS? ........................................................................................................................... 68
How Do SAS Devices Communicate? ................................................................................... 69
What’s a Phy? .......................................................................................................................... 69
What’s a SAS Port?.................................................................................................................. 70
What’s a SAS Address?............................................................................................................ 70
What’s a SAS Connector? ....................................................................................................... 70
What do SAS Cables Look Like? ............................................................................................ 70
How are Disk Drives Identified in SAS? ................................................................................ 71
What are the SAS Connection Options? ............................................................................... 71
How is SAS Different from Parallel SCSI?............................................................................. 73
This section provides a basic overview of the main features of SAS, introduces some common
SAS terms, and explains how SAS differs from parallel SCSI.
Note:
For technical articles and tutorials about SAS, refer to the SCSI Trade Association
(STA
TM
) Web site at www.scsita.org.