Default Paging Space During BOS Installation Via NIM

In AIX 4.3, default paging space is set by the BOS installation process when installing via NIM. The occurs, however, only if the following conditions are met:

• The method of installation is overwrite.
• Neither an image_data resource nor an image.data file on the diskette is specified for the installation.
• The source of the BOS image is neither a mksysb image nor a SPOT. A default paging space is set if the source of the BOS image is a SPOT, and:
  • the default image.data file contains more than one entry for paging. This file is located at:

    (spot_location)/lpp/bosinst/image_template

  • or if the LPs value for the single paging entry is set to the default value of 16.

The default paging size is calculated from the smaller value of optimal_ps and recommended_ps where:

RAM = amount of memory on the target system measured in megabytes (MB).

optimal_ps = maximum between RAM and (0.2 size of rootvg)

IF CDE (COSE Desktop Environment) is installed, recommmended_ps =

• amount of RAM is less than 32MB, then recommended_ps = 3 * RAM
• amount of RAM is 32MB or more, then recommended_ps = RAM + 64MB

IF CDE (COSE Desktop Environment) is not installed, recommmended_ps =

• amount of RAM is less than 32MB, then recommended_ps = 2 * RAM
• amount of RAM is 32MB or more, then recommended_ps = RAM + 32MB

The default paging space set by this process is never greater than 512MB.