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IBM PowerHA SystemMirror 7.1.2 Enterprise Edition for AIX

Book Description

This IBM® Redbooks® publication helps strengthen high availability solutions for IBM Power Systems™ with IBM PowerHA® SystemMirror® Enterprise Edition (hardware, software, and tools) with a well-defined and documented deployment model within an IBM Power Systems environment, offering clients a planned foundation for a dynamic, highly available infrastructure for their enterprise applications.

This book addresses topics to leverage the strengths of IBM PowerHA SystemMirror 7.1.2 Enterprise Edition for AIX on IBM Power Systems to solve client application high availability challenges, and maximize system availability, and management. The book examines the tools, utilities, documentation, and other resources available to help the IBM technical teams provide solutions and support for IBM high availability solutions with IBM PowerHA in an IBM Power Systems environment.

This book is targeted toward technical professionals (consultants, technical support staff, IT Architects, and IT Specialists) responsible for providing high availability solutions and support with IBM Power Systems and IBM PowerHA.

Table of Contents

  1. Front cover
  2. Notices
    1. Trademarks
  3. Preface
    1. The team who wrote this book
    2. Now you can become a published author, too!
    3. Comments welcome
    4. Stay connected to IBM Redbooks
  4. Part 1 Introduction
  5. Chapter 1. Concepts and overview of the IBM PowerHA SystemMirror 7.1.2 Enterprise Edition
    1. 1.1 High availability and disaster recovery
      1. 1.1.1 Disaster recovery considerations
    2. 1.2 Local failover, campus style, and extended distance clusters
    3. 1.3 Storage replication and the new HyperSwap feature
  6. Chapter 2. Differences between IBM PowerHA SystemMirror Enterprise Edition version 6.1 and version 7.1.2
    1. 2.1 Architecture changes
      1. 2.1.1 Cluster Aware AIX
      2. 2.1.2 ODM updates
    2. 2.2 New features and functionalities
      1. 2.2.1 Stretched and linked clusters
      2. 2.2.2 Split/merge handling overview
      3. 2.2.3 HyperSwap overview
      4. 2.2.4 IPv6 support
      5. 2.2.5 PowerHA Smart Assists
      6. 2.2.6 IBM Systems Director
      7. 2.2.7 New or changed cluster administration tools
      8. 2.2.8 Features at a glance added since PowerHA 6.1
    3. 2.3 Limitations
      1. 2.3.1 Deprecated features
      2. 2.3.2 Restrictions
      3. 2.3.3 Unsupported changes
    4. 2.4 Hardware and software prerequisites
  7. Chapter 3. Planning
    1. 3.1 Infrastructure considerations and support
      1. 3.1.1 Hostname and node name
      2. 3.1.2 Network considerations
      3. 3.1.3 Storage and SAN considerations
      4. 3.1.4 Cluster repository disk
      5. 3.1.5 Tie breaker disk
    2. 3.2 Hardware and software requirements
      1. 3.2.1 Hardware requirements for the AIX solution
      2. 3.2.2 Software requirements for PowerHA 7.1.2
      3. 3.2.3 Capacity on Demand (CoD) support
  8. Part 2 Campus style disaster recovery (stretched clusters)
  9. Chapter 4. Implementing DS8800 HyperSwap
    1. 4.1 Overview of HyperSwap
    2. 4.2 Traditional disaster recovery
    3. 4.3 HyperSwap failover
    4. 4.4 The architecture
      1. 4.4.1 In-band storage management
      2. 4.4.2 AIX support for HyperSwap
      3. 4.4.3 AIX view of HyperSwap disks
    5. 4.5 HyperSwap functionalities
    6. 4.6 Hardware and software requirements
    7. 4.7 Limitations
    8. 4.8 Considerations of implementation
    9. 4.9 Test environment of a HyperSwap cluster
    10. 4.10 Initial disk configuration
    11. 4.11 Preparation of a HyperSwap-capable disk
      1. 4.11.1 Selecting disks to be mirrored for HyperSwap disks
      2. 4.11.2 Establishing the connection path from hdiskA to hdiskB
      3. 4.11.3 Establishing the connection path from hdiskB to hdiskA
      4. 4.11.4 Establishing volume pairs in one direction
      5. 4.11.5 Enabling HyperSwap on all nodes
    12. 4.12 Initial configuration for the PowerHA cluster
    13. 4.13 Configuring the HyperSwap disk in PowerHA
      1. 4.13.1 Creating a volume group with HyperSwap capable disks
      2. 4.13.2 Defining the storage systems and their site association
      3. 4.13.3 Setting up the mirror group you want these HyperSwaps to be in
      4. 4.13.4 Create a resource group with site policy
      5. 4.13.5 Add a mirror group and a volume group into the resource group
      6. 4.13.6 Verification and synchronization
    14. 4.14 Swap demonstration for HyperSwap
      1. 4.14.1 Planned swap for user mirror group
      2. 4.14.2 Planned swap for a cluster repository mirror group
      3. 4.14.3 Planned swap for a system mirror group
      4. 4.14.4 Unplanned swap for pure write applications
      5. 4.14.5 Unplanned swap for pure read applications
      6. 4.14.6 Summary for HyperSwap performance
    15. 4.15 Oracle standalone database in a PowerHA HyperSwap environment
      1. 4.15.1 The environment description
      2. 4.15.2 HyperSwap disk configuration
      3. 4.15.3 Verifying AIX and the PowerHA cluster environment for the database
      4. 4.15.4 The Oracle database environment
      5. 4.15.5 Configure the database in PowerHA using the Oracle Smart Assist
      6. 4.15.6 Testing the cluster environment using PowerHA HyperSwap
  10. Chapter 5. Cross-site LVM mirroring with IBM PowerHA SystemMirror 7.1.2 Standard Edition
    1. 5.1 Cross-site LVM mirroring overview
      1. 5.1.1 Requirements
      2. 5.1.2 Planning considerations
    2. 5.2 Testing the environment
    3. 5.3 Configuring the cross-site LVM cluster
      1. 5.3.1 Configuring the cluster topology
      2. 5.3.2 Configuring the cluster resources
    4. 5.4 Test scenarios
      1. 5.4.1 Test case 1: Both nodes down site failure
      2. 5.4.2 Test case 2: Rolling node failures for site outage
      3. 5.4.3 Test case 3: Outage of a storage subsystem
      4. 5.4.4 Test case 4: Rolling disaster
  11. Part 3 Extended disaster recovery (linked clusters)
  12. Chapter 6. Configuring PowerHA SystemMirror Enterprise Edition linked cluster with SVC replication
    1. 6.1 Overview of SVC management
    2. 6.2 Planning and prerequisites overview
      1. 6.2.1 Planning
      2. 6.2.2 Prerequisite overview
    3. 6.3 Configuring PowerHA SystemMirror 7.1.2 Enterprise Edition with SVC remote copy
      1. 6.3.1 Scenario overview
      2. 6.3.2 Environment configuration for PowerHA
      3. 6.3.3 Configuring the cluster basic definitions
      4. 6.3.4 Configuring SVC replicated resources
      5. 6.3.5 Configuring resources and resource groups
    4. 6.4 Storage management with SVC replicated resources
      1. 6.4.1 Removing a disk from a PowerHA environment with SVC remote copy
      2. 6.4.2 Adding a volume to the PowerHA cluster with SVC remote copy
    5. 6.5 Testing the resource group move
      1. 6.5.1 Resource group move within a site
      2. 6.5.2 Resource group move across sites
      3. 6.5.3 Node failure
      4. 6.5.4 Site failure
    6. 6.6 Testing storage failure on SVC and V7000 mixed environment
      1. 6.6.1 SVC-V7000 mixed environment
      2. 6.6.2 Local site SAN failure
      3. 6.6.3 PPRC link failure
    7. 6.7 PowerHA SVC PPRC commands
    8. 6.8 IBM PowerHA SystemMirror and SVC global mirror fallover demonstration
  13. Chapter 7. Configuring PowerHA SystemMirror 7.1.2 Enterprise Edition with XIV replication
    1. 7.1 Introduction to XIV remote mirroring
    2. 7.2 Planning PowerHA SystemMirror 7.1.2 Enterprise Edition with XIV remote mirroring
      1. 7.2.1 Operational considerations
      2. 7.2.2 Software requirements
    3. 7.3 Preliminary steps for XIV storage configuration
    4. 7.4 Installing the XIV CLI
    5. 7.5 Creating an XIV replicated cluster using SMIT and XIV GUI
      1. 7.5.1 Our scenario description
      2. 7.5.2 Configuration of the XIV remote mirroring
      3. 7.5.3 Installation and configuration of the PowerHA SystemMirror software
      4. 7.5.4 Testing the cluster
    6. 7.6 Creating an XIV replicated cluster via clmgr and XIV CLI
      1. 7.6.1 Implementation overview
      2. 7.6.2 Configuring XIV remote mirror couplings using xcli
      3. 7.6.3 Configuring the cluster using clmgr
    7. 7.7 Administrating the cluster with XIV replicated resources
      1. 7.7.1 Adding volumes to the XIV remote mirror replicated resource
      2. 7.7.2 Remove volumes from a XIV remote mirror replicated resource
      3. 7.7.3 Adding a file system to a volume group
      4. 7.7.4 Change the recovery action
    8. 7.8 IBM PowerHA SystemMirror demonstration with XIV replication
  14. Part 4 System administration, monitoring, maintenance, and management
  15. Chapter 8. Migrating to PowerHA SystemMirror 7.1.2 Enterprise Edition
    1. 8.1 Migration planning
      1. 8.1.1 Requirements
      2. 8.1.2 Migration options
      3. 8.1.3 Offline method
      4. 8.1.4 Rolling method
      5. 8.1.5 Snapshot method
    2. 8.2 Clmigcheck explained
    3. 8.3 Migration scenarios
      1. 8.3.1 Rolling from PowerHA SystemMirror 6.1 Enterprise Edition
      2. 8.3.2 Snapshot from IBM PowerHA SystemMirror 6.1 Enterprise Edition
      3. 8.3.3 Offline migration from PowerHA 6.1 Enterprise Edition with IPv6 configuration
    4. 8.4 Solving migration errors
      1. 8.4.1 Node name not set to hostname
      2. 8.4.2 Stuck in migration
      3. 8.4.3 Non-IP network not deleted after migration completed
      4. 8.4.4 Clodmget not found
  16. Chapter 9. PowerHA 7.1.2 for IBM Systems Director plug-in enhancements
    1. 9.1 Installing the IBM Systems Director environment
      1. 9.1.1 Installing IBM Systems Director
      2. 9.1.2 Installing IBM Systems Director plug-in for PowerHA SystemMirror
      3. 9.1.3 Installing PowerHA SystemMirror plug-in fixes
      4. 9.1.4 Installing PowerHA SystemMirror agent fixes
    2. 9.2 Environment configuration
    3. 9.3 Configuring IBM PowerHA SystemMirror 7.1.2 Enterprise Edition using IBM Systems Director
      1. 9.3.1 Discovering servers
      2. 9.3.2 Creating the cluster
      3. 9.3.3 Verifying and synchronizing the cluster
      4. 9.3.4 Configuring resources
      5. 9.3.5 Configuring replicated mirror groups
      6. 9.3.6 Create a resource group
    4. 9.4 Administering a cluster
      1. 9.4.1 Bringing cluster services online and offline
      2. 9.4.2 Cluster snapshot
      3. 9.4.3 Moving cluster resource groups
  17. Chapter 10. Cluster partition management
    1. 10.1 Cluster partitioning
    2. 10.2 Methods to avoid cluster partitioning
    3. 10.3 Planning to avoid cluster partitioning
    4. 10.4 Detailed behavior og cluster partitioning
      1. 10.4.1 Test environment overview
      2. 10.4.2 Configuring the split and merge policy
      3. 10.4.3 Split policy: None, merge policy: Majority
      4. 10.4.4 Split policy: TieBreaker, merge policy: TieBreaker
  18. Part 5 Appendices
  19. Appendix A. Configuring IBM PowerHA SystemMirror with IPv6
    1. Configuring IBM PowerHA SystemMirror with IPv6
  20. Appendix B. DNS change for the IBM Systems Director environment with PoweHA
    1. Configuring DNS on an IBM Systems Director server
    2. Configuring the application server scripts
    3. Testing the application
  21. Related publications
    1. IBM Redbooks
    2. Other publications
    3. Online resources
    4. Help from IBM
  22. Back cover