Using the Sysplex Coupling Facility › Coupling Facility Management › CFRM Policy

CFRM Policy

To set up the CFRM policy, the systems programmer must know which subsystems and applications in the installation will use the coupling facility and the structure requirements of each.

Use the IBM utility program IXCMIAPU to define the CFRM policy to:

• Identify each coupling facility and each structure.
• Specify the size of each structure. The structure size will initially be allocated at the INITSIZE you specify. The maximum size of the structure is defined by SIZE. Use the TSSFAR utility to run a TSSFAR ACIDCHAN report, which will recommend the XES structure size. You can use this to help determine the structure size you want to specify in the CFRM policy.
• Specify the preference list (PRELIST), which is an ordered list of coupling facility names in which the structure can be allocated.
• Specify an exclusion list of structures that are not to be allocated in the same coupling facility as the structure.

Every application specifies the required structure types, as well as the name and size of the structure or structures it uses. CA Top Secret uses the SYSPLEX control option to provide this information. For information on the SYSPLEX control option, see the Control Options Guide.

For information on the CFRM policy, see the IBM guide MVS Setting Up a Sysplex.