A

Introduction to Serial Attached

SCSI

In this appendix...
Terminology Used in This Chapter.......................................................................................63
What is SAS?........................................................................................................................... 63
How Do SAS Devices Communicate?................................................................................... 64
What’s a Phy?..........................................................................................................................64
What’s a SAS Port?..................................................................................................................65
What’s a SAS Address?............................................................................................................65
What’s a SAS Connector?.......................................................................................................65
What do SAS Cables Look Like?............................................................................................65
How are Disk Drives Identified in SAS?................................................................................66
What are the SAS Connection Options?............................................................................... 66
How is SAS Different from Parallel SCSI?.............................................................................68
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
(STATM) Web site at www.scsita.org.