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Service Domain Manager (SDM)

The Service Domain Manager (SDM) module distributes resources between different services according to configurable Service Level Agreements (SLAs). The SLAs are based on Service Level Objectives (SLOs). In the context of SDM, a service is defined as a scalable and manageable software product that performs a specific function for its users. SDM functionality enables you to manage resources for all kind of scalable services. A scalable service is a service for which additional resources enable better performance.

SDM can manage services such as:

• Sun Grid Engine clusters. The first version of the SDM module supports multi-clustering of Grid Engine clusters.
• Application servers
• Reassignment of software licenses between different organizational entities of a company

A service uses Key Performance Indicators (KPIs) to determine its need for a resource. Those KPIs are reported through a Service Adapter that acts as a proxy between a service and the SDM core system. The SDM supports the concept of a spare pool which enables SDM to withdraw unneeded computational resources (hosts, which can be physical hosts or virtualized machines) from services. SDM also enables you to power off unneeded or underutilized machines to minimize the environmental impact of your data centers.

The SDM module is designed to handle different kinds of services that have in common a need for the same set of resources. The SDM module enables those services to share their resources effectively and increase resource utilization.

For conceptual information about the components that comprise the SDM module, see the following topics:

• Resources
• Resource Provider
• Executor
• Services
• Reporter
• Spare Pool

For task-related information about the SDM module, see these topics:

• Installing the Service Domain Manager (SDM) Module
• Administering SDM
• Using SDM With the Sun Grid Engine Adapter

For additional reference information for the SDM module, see these topics:

• SDM Command Reference
• SDM Configuration Reference

To print this section, see the Printable Service Domain Manager Guide.