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SAS Storage Architecture world-class technical training Are your company’s technical training needs being addressed in the most effective manner? MindShare has over 25 years experience in conducting technical training on cutting-edge technologies. We understand the challenges companies have when searching for quality, effective training which reduces the students’ time away from work and provides cost-effective alternatives. MindShare offers many fl exible solutions to meet those needs. Our courses are taught by highly-skilled, enthusiastic, knowledgeable and experienced instructors. We bring life to knowledge through a wide variety of learning methods and delivery options. training that fi ts your needs MindShare recognizes and addresses your company’s technical training issues with: • Scalable cost training • Customizable training options • Reducing time away from work • Just-in-time training • Overview and advanced topic courses • Training delivered effectively globally • Training in a classroom, at your cubicle or home offi ce • Concurrently delivered multiple-site training MindShare training courses expand your technical skillset 2 PCI Express 2.0 ® 2 Serial Attached SCSI (SAS) 2 Intel Core 2 Processor Architecture 2 DDR2/DDR3 DRAM Technology 2 AMD Opteron Processor Architecture 2 PC BIOS Firmware 2 Intel 64 and IA-32 Software Architecture 2 High-Speed Design 2 Intel PC and Chipset Architecture 2 Windows Internals and Drivers 2 PC Virtualization 2 Linux Fundamentals 2 USB 2.0 ... and many more. 2 Wireless USB All courses can be customized to meet your 2 Serial ATA (SATA) group’s needs. Detailed course outlines can be found at www.mindshare.com bringing life to knowledge. real-world tech training put into practice worldwide *PCI Express ® is a registered trademark of the PCISIG MindShare Learning Options MindShare MindShare MindShare MindShare Classroom Virtual Classroom eLearning Press Intro eLearning In-House Training Virtual In-House Training Books Modules Comprehensive Public Training Virtual Public Training eLearning Modules eBooks Classroom Training Virtual Classroom Training eLearning Module Training MindShare Press Invite MindShare to train The majority of our courses MindShare is also an eLearning Purchase our books and you in-house, or sign-up to live over the web in an inter- company. Our growing list of eBooks or publish your attend one of our many public active environment with WebEx interactive eLearning modules own content through us. classes held throughout the and a phone bridge. We deliver include: MindShare has authored year and around the world. training cost-effectively across • Intro to Virtualization over 25 books and the list No more boring classes, the multiple sites and time zones. Technology is growing. Let us help ‘MindShare Experience‘ is Imagine being trained in your • Intro to IO Virtualization make your book project sure to keep you engaged. cubicle or home offi ce and • Intro to PCI Express 2.0 a successful one. avoiding the hassle of travel. Updates Contact us to attend one of • PCI Express 2.0 our public virtual classes. • USB 2.0 • AMD Opteron Processor Architecture • Virtualization Technology ...and more Engage MindShare Have knowledge that you want to bring to life? MindShare will work with you to “Bring Your Knowledge to Life.” Engage us to transform your knowledge and design courses that can be delivered in classroom or virtual class- room settings, create online eLearning modules, or publish a book that you author. We are proud to be the preferred training provider at an extensive list of clients that include: ADAPTEC • AMD • AGILENT TECHNOLOGIES • APPLE • BROADCOM • CADENCE • CRAY • CISCO • DELL • FREESCALE GENERAL DYNAMICS • HP • IBM • KODAK • LSI LOGIC • MOTOROLA • MICROSOFT • NASA • NATIONAL SEMICONDUCTOR NETAPP • NOKIA • NVIDIA • PLX TECHNOLOGY • QLOGIC • SIEMENS • SUN MICROSYSTEMS SYNOPSYS • TI • UNISYS 4285 SLASH PINE DRIVE COLORADO SPRINGS, CO 80908 USA M 1.602.617.1123 O 1.800.633.1440 [email protected] www.mindshare.com SAS Storage Architecture (Revision 1.1) MINDSHARE, INC. Mike Jackson MINDSHARE PRESS The authors and publishers have taken care in preparation of this book, but make no expressed or implied warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for incidental or consequential damages in connec- tion with or arising out of the use of the information or programs contained herein. Visit MindShare, Inc. on the web: www.mindshare.com Library of Congress Control Number: 2005931901 Copyright ©2005 by MindShare, Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopy- ing, recording, or otherwise, without the prior written permission of the publisher. Printed in the United States of America. For information on obtaining permission for use of material from this work, please sub- mit a written request to: MindShare Press Attn: Robin Winkles 4285 Slash Pine Dr. Colorado Springs, CO 80908 Fax: 719-487-1434 Set in 10-point Palatino by MindShare, Inc. ISBN 0977087808 First Printing September 2005 Revision History Date Revision Description - Fixed Table of Contents chapter numbers. - Page 104 – “SAS implements the SATA Tunneled Protocol…” - Page 141 – third line of first paragraph, SPC-3 was July 2007 1.1 changed to SBC-3 - Figure 16-8 – the transmitter buffer was removed from the drawing. This buffer is in the Physical Layer. - Table 19-1 – third entry was changed to “2 to (n-4)” - Corrected minor grammatical errors. September 2005 1.0 - Initial Release Contents About This Book Scope............................................................................................................................................. 1 The MindShare Architecture Series ....................................................................................... 1 Cautionary Note ......................................................................................................................... 2 The Standard Is the Final Word .............................................................................................. 3 Documentation Conventions................................................................................................... 3 Hexadecimal Notation ........................................................................................................ 3 Binary Notation.................................................................................................................... 3 Decimal Notation ................................................................................................................. 4 Bits Versus Bytes Notation ................................................................................................. 4 Bit Fields (Logical Groups of Bits or Signals) .................................................................. 4 Visit Our Web Site..................................................................................................................... 5 We Want Your Feedback...........................................................................................................5 Part 1: Introduction Chapter 1: The Motivation for SAS Introduction................................................................................................................................. 9 Serial SCSI................................................................................................................................. 10 General................................................................................................................................. 10 Earlier Serial Buses Supported SCSI ............................................................................... 11 SAS Design Goals.................................................................................................................... 13 The SAS Solution..................................................................................................................... 14 Bandwidth........................................................................................................................... 15 Advantages ......................................................................................................................... 15 Positioning SAS........................................................................................................................ 17 Disk Drive Comparison.......................................................................................................... 19 Interface Comparison .............................................................................................................. 21 Example Topology ................................................................................................................... 23 Usage Model Summary........................................................................................................... 25 Chapter 2: Origins of SAS and Background Background for Serial SCSI ................................................................................................... 27 SCSI Background ............................................................................................................... 28 SCSI Definitions ................................................................................................................. 31 Problems with Parallel SCSI............................................................................................
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