
A
Introduction to Serial Attached
SCSI
In this appendix...
Terminology Used in This Chapter ....................................................................................... 64
What is SAS? ........................................................................................................................... 64
How Do SAS Devices Communicate?................................................................................... 65
What’s a Phy? .......................................................................................................................... 65
What’s a SAS Port?.................................................................................................................. 66
What’s a SAS Address?............................................................................................................ 66
What’s a SAS Connector?....................................................................................................... 66
What do SAS Cables Look Like? ............................................................................................ 66
How are Disk Drives Identified in SAS?................................................................................ 67
What are the SAS Connection Options? ............................................................................... 67
How is SAS Different from Parallel SCSI?............................................................................. 69
This section provides a basic overview of the main features of Serial Attached SCSI (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.
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