Policies

A policy is a set of rules and actions that systems in a sysplex are to follow when using certain MVS™ services. A policy allows MVS to manage specific resources in compliance with your system and resource requirements, but with little operator intervention. A policy can be set up to govern all systems in the sysplex or only selected systems. You might need to define more than one policy to allow for varying workloads, configurations, or other installation requirements at different times. For example, you might need to define one policy for your prime shift operations and another policy for other times. Although you can define more than one policy of each type (except for system logger) only one policy of each type can be active at a time. For system logger, there is only one LOGR policy in the sysplex.

The following policies can be used to enhance systems management in a sysplex:

The coupling facility resource management (CFRM) policy allows you to define how MVS is to manage coupling facility resources.
The sysplex failure management (SFM) policy, allows you to define how MVS is to manage system failures, signaling connectivity failures, and PR/SM™ reconfiguration actions.
The workload management (WLM) policy allows you to define service goals for workloads.
The automatic restart management policy allows you to define how MVS is to manage automatic restarts of started tasks and batch jobs that are registered as elements of automatic restart management.
The system logger policy, LOGR, allows you to define, update, or delete structure or log stream definitions.