The role of CFRM in a sysplex

Coupling facility resource management provides the services to manage coupling facility resources in a sysplex. This management includes the enforcement of CFRM policies to ensure that the coupling facility and structure requirements as defined in each policy are satisfied.

A Note about Operations

Throughout its management of coupling facility resources, CFRM issues operator messages to record the status of its processing. This topic is included so that you will understand the messages that are issued and be prepared to respond if necessary. Your operations staff should have a thorough understanding of the connections to the coupling facility and of the application's use of one or more structures in the coupling facility.

CFRM uses the CFRM couple data set to maintain status data about the use of coupling facility resources in the sysplex and to hold its copy of the active CFRM policy. Whenever a CFRM couple data set is made available in the sysplex, either for the first time or when a switch is made to a different CFRM couple data set, CFRM becomes operational. Once operational, CFRM performs the following services for the sysplex:

Cleans up status data
Performs system level initialization
Reconciles active policy data with data in the coupling facility.