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