Planning a two-node IBM PowerHA SystemMirror cluster: Six must-know items
1. What is PowerHA SystemMirror for AIX?
Get an overview of the IBM PowerHA® SystemMirror high-availability (HA) solution, find out what it protects and learn about its product architecture.
READ: Introduction to PowerHA
READ: IBM PowerHA SystemMirror 7.1 for AIX, chapters 1 and 2
2. Infrastructure planning and configuration
To plan and implement a two-node PowerHA cluster, you should determine what version of PowerHA you will implement, what version of the IBM AIX® operating system will be required, how you will handle Ethernet network and storage redundancy, and lastly, how many PowerHA nodes will be in the cluster.
READ: Planning PowerHA SystemMirror, topics “Planning cluster network connectivity,” “Planning shared disk and tape devices” and “Planning shared LVM components”
READ: IBM PowerHA SystemMirror 7.1 for AIX, chapter 3
WATCH: PowerHA7.1 Part 2 SMIT configuration
3. Application planning and configuration
Learn how to use Smart Assists to simplify application planning and configuration. Manual configuration is also available.
READ: Planning PowerHA SystemMirror, topics “Planning Resource Groups” and “Applications and PowerHA SystemMirror”
READ: The topic pertinent to your application to consider using Smart Assists in the information center.
READ: IBM PowerHA SystemMirror 7.1 for AIX, chapter 6
4. Configure the application into PowerHA
Use either SMIT or the PowerHA SystemMirror IBM Systems Director plug-in to create the PowerHA cluster, nodes, networks, resources and resource groups.
READ: IBM PowerHA SystemMirror 7.1 for AIX, chapter 5
WATCH: Configuring a PowerHA SystemMirror V7.1 for AIX Cluster – IBM Training
READ: Installing PowerHA SystemMirror
READ: clmgr: A Technical Reference
5. Test the configured cluster
Learn about various test plans and simulations to help you determine if PowerHA is configured and working correctly. After you have created the cluster, run the test plan, documenting behaviors and resolving problems.
READ: IBM PowerHA SystemMirror 7.1 for AIX, chapter 9
WATCH: PowerHA7.1 Part 4 HA in action
6. What PowerHA course is right for my environment and administering my PowerHA cluster?
For more detailed information and lab exercises, consider IBM Training. A PowerHA SystemMirror for AIX cheat sheet is also included.
WATCH: What’s new in IBM Training’s PowerHA curriculum
READ: IBM PowerHA for AIX System Administration Training
READ: The PowerHA for AIX (formerly HACMP) cheat sheet