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Front cover
The IBM TotalStorage
DS6000 Series: Concepts
and Architecture
Enterprise-class storage functions in a
compact and modular design
On demand scalability and
multi-platform connectivity
Enhanced configuration
flexibility with virtualization
Cathy Warrick Christine O’Sullivan
Olivier Alluis Stu S Preacher
Werner Bauer Torsten Rothenwaldt
Heinz Blaschek Tetsuroh Sano
Andre Fourie Jing Nan Tang
Juan Antonio Garay Anthony Vandewerdt
Torsten Knobloch Alexander Warmuth
Donald C Laing Ro
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International Technical Support Organization The IBM TotalStorage DS6000 Series: Concepts and Architecture March 2005 SG24-6471-00
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Note: Before using this information and the product it supports, read the information in “Notices” on page xiii. First Edition (March 2005) This edition applies to the DS6000 series per the October 12, 2004 announcement. Please note that an early version of DS6000 microcode was used for the screen captures and command output, so some details may vary from the currently available microcode. Note: This book contains detailed information about the architecture of IBM's DS6000 product family. W
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iii
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iv DS6000 Series: Concepts and Architecture
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Contents Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv Summary of changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv March 2005, First Edition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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2.5.1 Technical details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 2.5.2 Device adapter ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 2.5.3 Host adapter ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 2.5.4 SFPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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5.1 DS6000 highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 5.1.1 DS6800 Model 1750-511 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 5.1.2 DS6000 Model 1750-EX1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 5.2 Designed to scale for capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Chapter
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8.3.3 Remote Mirror and Copy functions (RMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 8.3.4 Parallel Access Volumes (PAV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 8.3.5 Server attachment license . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 8.3.6 Ordering license functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 8.3.7 Disk storage feature activation
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10.3 Supported environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 10.4 Installation methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 10.5 Command flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198 10.6 User security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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12.2.1 Scalability support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244 12.2.2 Large Volume Support (LVS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 12.2.3 Read availability mask support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 12.2.4 Initial Program Load (IPL) enhancements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246 12.2.5 DS6000 definition to host
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Chapter 15. Data migration in the open systems environment. . . . . . . . . . . . . . . . . . 289 15.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290 15.2 Comparison of migration methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 15.2.1 Host operating system-based migration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 15.2.2 Subsystem-based data migration
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Multipath. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342 Avoiding single points of failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343 Configuring multipath . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344 Adding multipath volumes to iSeries using 5250 interface . . . . . . . . . . . . . . . . . . . . . . 345 Adding v
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Notices This information was developed for products and services offered in the U.S.A. IBM may not offer the products, services, or features discussed in this document in other countries. Consult your local IBM representative for information on the products and services currently available in your area. Any reference to an IBM product, program, or service is not intended to state or imply that only that IBM product, program, or service may be used. Any functionally equivalent product, progra
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Trademarks The following terms are trademarks of the International Business Machines Corporation in the United States, other countries, or both: iSeries™ DFSORT™ OS/400® i5/OS™ Enterprise Storage Server® Parallel Sysplex® pSeries® ESCON® Power PC® xSeries® FlashCopy® PowerPC® z/OS® FICON® Predictive Failure Analysis® z/VM® Geographically Dispersed Parallel POWER™ z/VSE™ Sysplex™ Redbooks™ zSeries® GDPS® RMF™ AIX 5L™ HACMP™ RS/6000® AIX® IBM® S/390® AS/400® IMS™ Seascape® BladeCenter® Lotus Not
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Summary of changes This section describes the technical changes made in this edition of the book and in previous editions. This edition may also include minor corrections and editorial changes that are not identified. Summary of Changes for SG24-6471-00 for DS6000 Series: Concepts and Architecture as created or updated on December 13, 2005. March 2005, First Edition This revision reflects the addition, deletion, or modification of new and changed information described below. Changed informati
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xvi DS6000 Series: Concepts and Architecture
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Preface This IBM Redbook describes the IBM TotalStorage® DS6000 storage server series, its architecture, its logical design, hardware design and components, advanced functions, performance features, and specific characteristics. The information contained in this redbook is useful for those who need a general understanding of this powerful new disk subsystem, as well as for those looking for a more detailed understanding of how the DS6000 series is designed and operates. The DS6000 series is
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DWDM technology, CWDM technology). His areas of interest include storage remote copy on long-distance connectivity for business continuance and disaster recovery solutions. Werner Bauer is a certified IT specialist in Germany. He has 25 years of experience in storage software and hardware, as well as S/390®. He holds a degree in Economics from the University of Heidelberg. His areas of expertise include disaster recovery solutions in enterprises utilizing the unique capabilities and features
