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by Olaf Weiser
SAP HANA and ESS: A Winning Combination
Front cover
Notices
Trademarks
Preface
Authors
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Summary of changes
August 2018, Second Edition
Chapter 1. Introduction to SAP HANA and IBM Elastic Storage Server
1.1 Landscape overview
1.2 Introduction to ESS
1.3 Software components
Chapter 2. Cluster networking
2.1 Cluster networking overview
2.2 Network topology summary
Chapter 3. Understanding IBM Spectrum Scale RAID components
3.1 Recovery Group
3.2 RAID Code, VDisk, and declustered array
3.3 IBM Spectrum Scale RAID: Fast writes (NVR)
3.3.1 Fundamental considerations
3.4 IBM Spectrum Scale RAID: Hot spare and disk failures
3.4.1 Hot spares in IBM Spectrum Scale RAID
3.4.2 Disk failure
3.4.3 Second disk failure
3.4.4 Spare space
Chapter 4. IBM Spectrum Scale adjustments
4.1 Overview
4.1.1 Server-side settings
4.1.2 Client-side settings
4.2 IBM Spectrum Scale parameters
4.2.1 DirectIO in IBM Spectrum Scale
4.2.2 ignorePrefetchLUNCount
4.3 Performance numbers
4.3.1 Single client performance
4.3.2 SAP HANA HWCCT test
Chapter 5. IBM Spectrum Scale customization for HANA
5.1 Overview
5.2 File system and VDisk layout
5.2.1 Internal VDisks
5.2.2 Log file system
5.2.3 Data file system
5.2.4 Shared file system
5.2.5 Creating file sets
Chapter 6. Summary
Appendix A. Sample configuration for bonding on SUSE Linux Enterprise Server
Appendix B. Loghome configuration of an ESS building block
Appendix C. Calculating maximum capacity of a DA
Appendix D. Example of file system setup and HANA installation
Appendix E. Side aware configuration examples
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Note: Before using this information and the product it supports, read the information in “Notices” on page v.
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