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Introduction to SAS
In this chapter...
Terminology Used in This Chapter ....................................................................................... 53
What is SAS? ........................................................................................................................... 53
How Do SAS Devices Communicate? ................................................................................... 53
What’s a Phy? .......................................................................................................................... 54
What’s a SAS Port?.................................................................................................................. 54
What’s a SAS Address?............................................................................................................ 55
What’s a SAS Connector?....................................................................................................... 55
What do SAS Cables Look Like?............................................................................................ 55
How are Disk Drives Identified in SAS?................................................................................ 55
What are the SAS Connection Options? ............................................................................... 55
How is SAS Different from Parallel SCSI?............................................................................. 57
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
.