Front cover IBM XIV Storage System: Architecture, Implementation, and Usage Non Disruptive Code load GUI and XCLI improvments Support for LDAP authentication TPC Integration Secure Remote Support Bertrand Dufrasne Aubrey Applewhaite Jawed Iqbal Christina Lara Lisa Martinez Alexander Safonov Hank Sautter Stephen Solewin Ron Verbeek Pete Wendler ibm.com/redbooks International Technical Support Organization IBM XIV Storage System: Architecture, Implementation, and Usage September 2009 SG24-7659-01 Note: Before using this information and the product it supports, read the information in “Notices” on page ix. Second Edition (September 2009) This edition applies to Version 10, Release 1, of the XIV Storage System software. © Copyright International Business Machines Corporation 2009. All rights reserved. Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Notices . ix Trademarks . .x Summary of changes. xi September 2009, Second Edition . xi Preface . xiii The team who wrote this book . xiv Become a published author . xvi Comments welcome. xvi Chapter 1. IBM XIV Storage System overview . 1 1.1 Introduction . 2 1.2 System models and components . 2 1.3 Key design features . 3 1.4 The XIV Storage System software . 4 1.5 Host support . 8 Chapter 2. XIV logical architecture and concepts . 9 2.1 Architecture overview . 10 2.2 Parallelism. 12 2.2.1 Hardware parallelism and grid architecture. 12 2.2.2 Software parallelism . 13 2.3 Full storage virtualization . 14 2.3.1 Logical system concepts. 16 2.3.2 System usable capacity . 20 2.3.3 Storage Pool concepts . 20 2.3.4 Capacity allocation and thin provisioning . 23 2.4 Reliability, availability, and serviceability. 31 2.4.1 Resilient architecture . 31 2.4.2 Rebuild and redistribution . 34 2.4.3 Minimized exposure . 39 Chapter 3. XIV physical architecture, components, and planning . 43 3.1 IBM XIV Storage System models 2810-A14 and 2812-A14 . 44 3.2 IBM XIV hardware components . 46 3.2.1 Rack and UPS modules . 47 3.2.2 Data Modules and Interface Modules . 50 3.2.3 SATA disk drives. 56 3.2.4 Patch panel . 58 3.2.5 Interconnection and switches . 59 3.2.6 Support hardware . 59 3.2.7 Hardware redundancy. 61 3.3 Hardware planning overview. 62 3.3.1 Ordering IBM XIV hardware . 62 3.3.2 Physical site planning . 63 3.3.3 Basic configuration planning . 64 3.3.4 IBM XIV physical installation. 73 3.3.5 System power-on and power-off . 75 © Copyright IBM Corp. 2009. All rights reserved. iii Chapter 4. Configuration . 79 4.1 IBM XIV Storage Management software. 80 4.1.1 XIV Storage Management user interfaces . 80 4.1.2 XIV Storage Management software installation . 81 4.2 Managing the XIV Storage System . 84 4.2.1 The XIV Storage Management GUI . 86 4.2.2 Log on to the system with XCLI . 93 4.3 Storage Pools . 96 4.3.1 Managing Storage Pools with the XIV GUI . 98 4.3.2 Pool alert thresholds . 104 4.3.3 Manage Storage Pools with XCLI . 104 4.4 Volumes . 107 4.4.1 Managing volumes with the XIV GUI . 108 4.4.2 Managing volumes with XCLI . 117 4.5 Host definition and mappings . 118 4.6 Scripts . 119 Chapter 5. Security . 121 5.1 Physical access security . 122 5.2 Native user authentication. 122 5.2.1 Managing user accounts with XIV GUI . 127 5.2.2 Managing user accounts using XCLI . 133 5.2.3 Password management . 137 5.2.4 Managing multiple systems. 138 5.3 LDAP managed user authentication . 140 5.3.1 Introduction to LDAP. 140 5.3.2 LDAP directory components . 141 5.3.3 LDAP product selection . ..