Administration Guide

Chapter 22. Managing a High Availability Control Workstation configuration

This chapter provides overview and task information for the High Availability Control Workstation (HACWS) function. The HACWS function provides for a backup control workstation for your SP system.

IBM assumes that you have planned for, installed, and configured the HACWS function.

For information on planning for HACWS function, see the books IBM RS/6000 SP: Planning Volume 1, Hardware and Physical Environment and IBM RS/6000 SP: Planning Volume 2, Control Workstation and Software Environment.

IBM also suggests that you read the documentation for IBM High Availability Cluster Multi-Processing for AIX (HACMP). The HACMP licensed program is the foundation for HACWS function.

Information is provided in this chapter for the following tasks:

• Understanding the HACWS function.
• Modifying typical administrative tasks (maintaining the /etc/passwd database, setting up mail spools, setting up file collections, for example) so that subsystems will fail over to the backup control workstation in the event the primary control workstation is not available. This information is covered in the order of the related chapters in this book, the PSSP: Administration Guide:
  • Security features of the SP system
  • Starting up and shutting down the SP system
  • Remote execution of SP commands
  • Controlling remote execution using Sysctl
  • Managing file collections
  • Managing user accounts
  • Managing SP resources
  • Managing time synchronization
  • Managing an automounter
  • Managing mail service
  • Accounting
  • Using a switch
  • Managing system partitions
  • Managing extension nodes
  • Using the SP Perspectives
• Customizing HACMP
• Verifying frame supervisor cables