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A
Introduction to SAS
In this appendix...
Terminology Used in This Chapter ....................................................................................... 89
What is SAS? ........................................................................................................................... 89
How Do SAS Devices Communicate?................................................................................... 90
What’s a Phy? .......................................................................................................................... 90
What’s a SAS Port?.................................................................................................................. 91
What’s a SAS Address?............................................................................................................ 91
What’s a SAS Connector?....................................................................................................... 91
What do SAS Cables Look Like?............................................................................................ 91
How are Disk Drives Identified in SAS?................................................................................ 92
What are the SAS Connection Options? ............................................................................... 92
How is SAS Different from Parallel SCSI?............................................................................. 94
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.