Capacity Provisioning basics
- Field of operation
- The scope of a z/OS® Capacity Provisioning system is referred to as a Capacity Provisioning Domain, or simply a domain. The domain configuration describes the scope of management within a provisioning domain. The domain includes hardware and software elements. The hardware elements are one or more central processor complexes (CPCs) where capacity can be provisioned or deprovisioned by Capacity Provisioning. The software elements are z/OS operating systems that can run on one or more of these CPCs. These elements are monitored by Capacity Provisioning to determine the hardware requirements.
- Rules of operation
- Provisioning Management is controlled by a Capacity Provisioning Policy, or simply a policy. This policy defines the actions to be performed on the hardware and software elements in response to the demands of the observed software elements. A policy contains rules, which define capacity that can be provisioned, time periods during which the rule is applied and, optionally, workload conditions that trigger provisioning.
The domain is controlled by the Provisioning Manager. The Provisioning Manager runs on a z/OS system and controls the domain in real time. It observes the software elements, monitors workload demands and observes the physical utilization of the shared processor pool. It recommends hardware configuration changes to the system operator, or can activate or deactivate capacity to satisfy these demands.
.
The Capacity Provisioning Management Console (CPMC) is the graphical user interface for the Provisioning Manager. You use this interface to work with provisioning policies and domain configurations, and to view the status of the Provisioning Manager.
These concepts are explained in Capacity Provisioning Domain, Capacity Provisioning Policy, Capacity Provisioning Manager, and Capacity Provisioning Management Console.
More information about key points is provided in Capacity Provisioning in detail.