SAS Storage Architecture - MindShare

1 Training that fi ts your needsMindShare 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 trainingbringing lifeto knowledge. real-world tech training put into practice worldwide real-world tech training put into practice worldwide real-world tech training put into practice worldwide real-world tech training put into practice worldwideAre your company s technical training needs being addressed in the most effective manner?

2 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 PCI Express 2 Intel Core 2 Processor Architecture2 AMD Opteron Processor Architecture2 Intel 64 and IA-32 Software Architecture2 Intel PC and Chipset Architecture2 PC Virtualization2 USB Wireless USB2 Serial ATA (SATA)2 Serial Attached SCSI (SAS)2 DDR2/DDR3 DRAM Technology 2 PC BIOS Firmware 2 High-Speed Design2 Windows Internals and Drivers2 Linux and many courses can be customized to meet your group s needs.

3 Detailed course outlines can be found at technical trainingMindShare training courses expand your technical skillset*PCI Express is a registered trademark of the PCISIG*PCI Express is a registered trademark of the 4285 SLASH PINE DRIVE COLORADO SPRINGS, CO 80908 USA M O MindShareHave 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 are proud to be the preferred training provider at an extensive list of clients that include.

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5 No more boring classes, the MindShare Experience issure to keep you Classroom TrainingThe majority of our courses live over the web in an inter-active environment with WebEx and a phone bridge. We deliver training cost-effectively across multiple sites and time zones. Imagine being trained in your cubicle or home offi ce and avoiding the hassle of travel. Contact us to attend one of our public virtual Module TrainingMindShare is also an eLearning company. Our growing list of interactive eLearning modules include: Intro to Virtualization Technology Intro to IO Virtualization Intro to PCI Express Updates PCI Express USB AMD Opteron Processor Architecture Virtualization Technology.

6 And moreMindShare PressPurchase our books and eBooks or publish your own content through us. MindShare has authored over 25 books and the listis growing. Let us help make your book project a successful Learning OptionsMindShare ClassroomMindShare Virtual ClassroomMindShare eLearningMindShare PressIn-House TrainingPublic TrainingVirtual In-House TrainingVirtual Public TrainingIntro eLearning ModulesComprehensive eLearning ModulesBookseBooksSAS StorageArchitecture(Revision ) MindShare , JacksonMINDSHARE PRESSThe 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.

7 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 MindShare , Inc. on the web: Library of Congress Control Number: 2005931901 Copyright 2005 by MindShare , 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.

8 Printed in the United States of information on obtaining permission for use of material from this work, please sub-mit a written request to: MindShare PressAttn: Robin Winkles4285 Slash Pine Springs, CO 80908 Fax: 719-487-1434 Set in 10-point Palatino by MindShare , 0977087808 First Printing September 2005 Revision History Date Revision Description July 2007 - Fixed Table of Contents chapter numbers. - Page 104 SAS implements the SATA Tunneled - Page 141 third line of first paragraph, SPC-3 was changed to SBC-3 - Figure 16-8 the transmitter buffer was removed from the drawing.

9 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 - Initial Release ContentsvAbout This BookScope .. 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 .. 5We Want Your 1: IntroductionChapter 1: The Motivation for 9 Serial 10 Earlier Serial Buses Supported SCSI.

10 11 SAS Design Goals .. 13 The SAS 15 Advantages .. 15 Positioning 17 Disk Drive Comparison ..19 Interface Comparison .. 21 Example Topology .. 23 Usage Model 25 Chapter 2: Origins of SAS and BackgroundBackground for Serial SCSI .. 27 SCSI Background .. 28 SCSI Definitions .. 31 Problems with Parallel SCSI .. 33 Source-Synchronous Clocking .. 35 Fibre Channel Background .. 36 Delivering a Frame .. 39 ContentsviATA 42 Parallel ATA .. 42 Serial 44 Chapter 3: SAS OverviewComparison of SCSI and SAS 49 SCSI 50 Software Request.