User`s guide

A
Introduction to SAS
In this chapter...
Terminology Used in This Appendix .................................................................................... 51
What is SAS? ........................................................................................................................... 51
How do SAS Devices Communicate?.................................................................................... 52
What’s a Phy? .......................................................................................................................... 52
What’s a SAS Port?.................................................................................................................. 52
What’s a SAS Address?............................................................................................................ 53
What’s a SAS Connector?....................................................................................................... 53
What do SAS Cables Look Like?............................................................................................ 53
How are Disk Drives Identified in SAS?................................................................................ 53
What are the SAS Connection Options? ............................................................................... 54
How is SAS Different from Parallel SCSI?............................................................................. 55
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 .