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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

) Web site at www.scsita.org.

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