User`s guide

A
Introduction to Serial Attached
SCSI (SAS)
In this appendix...
Terminology Used in This Chapter ....................................................................................... 60
What is SAS? ........................................................................................................................... 60
How Do SAS Devices Communicate?................................................................................... 61
What’s a Phy? .......................................................................................................................... 61
What’s a SAS Port?.................................................................................................................. 62
What’s a SAS Address?............................................................................................................ 62
What’s a SAS Connector?....................................................................................................... 62
What do SAS Cables Look Like?............................................................................................ 63
How are Disk Drives Identified in SAS?................................................................................ 63
What are the SAS Connection Options? ............................................................................... 63
How is SAS Different from Parallel SCSI?............................................................................. 65
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.