Planning Volume 2, Control Workstation and Software Environment

Software requirements for HACWS configurations

The software requirements for the control workstation include:

• Two AIX server licenses.
• |Two licenses for IBM C for AIX or the batch C and C++ compilers and |runtime libraries of VisualAge C++ Professional 5.0.2.0 |for AIX or later.

  |If the compiler's license server is on the control workstation the |backup control workstation should also have a license server with at least one |license. If there is no license server on the backup control |workstation, an outage on the primary control workstation will not allow the |SP system access to a compiler license.

• Two licenses and software sets for High Availability Cluster Multi-Processing for AIX (HACMP or HACMP/ES).

  Both the client and server option must be installed on both control workstations. You must purchase two licenses. Table 44 shows which levels can be used.
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  |Table 44. Levels of HACMP supported with PSSP HACWS
  

  	PSSP 3.4 with AIX 4.3.3	PSSP 3.4 with AIX 5L 5.1
  HACMP 4.4	x	x
  HACMP 4.4.1	x	x
  HACMP/ES 4.4	x
  HACMP/ES 4.4.1	x	x

  See the appropriate HACMP documentation for the latest information on which levels of HACMP are supported with the level of AIX you are using with PSSP 3.4.

• PSSP 3.4 optional component HACWS

  This is the customization software that is required for HACMP support of the control workstation. It comes with your order of PSSP 3.2 as an optionally installable component. Install a copy on both control workstations.

Required components

Once you decide that the high availability control workstation is right for your installation, order the following components:

• An AIX server license for each control workstation.

  AIX 4.3.3 (or later) is required for PSSP 3.2. Refer to the Read This First document for the latest information on what levels of AIX are supported with PSSP 3.2.

• The high availability control workstation optional component of PSSP 3.2 with any related cables, hardware, and software your SP system might need.
• Two licenses for HACMP (Do not use the Enhanced Scalability feature unless you use HACMP 4.3 or later.)

  You can use any level of HACMP that is supported with the level of AIX that is supported with PSSP 3.2. Refer to the appropriate HACMP documentation for the latest information on what levels of HACMP are supported with the level of AIX you are using or considering with PSSP 3.2.

Planning and using the backup control workstation will be simpler if you configure your backup control workstation identical to the primary control workstation. Some components must be identical, others can be similar. For example, the TTY assignments on each must be identical and should be configured in the same slots on each. If you have the same number and type of disks on each, your planning and operation will be simpler. Otherwise you might have to plan recovery scripts that address HD0 on one control workstation and HD3 on the other.