The selection string is a logical expression used to select one or more resources to match one or more criteria. Any resource that satisfies the criteria is selected.
The following resources can be used as selection criteria.
Static resources are built-in resources that represent host information that does not change over time, such as the maximum RAM available to user processes or the number of processors in a machine. Most static resources are determined at start-up time, or when hardware configuration changes are detected.
Static resources can be used to select appropriate hosts based on binary architecture, relative CPU speed, and system configuration.
The CPU factor is the speed of the host’s CPU relative to other hosts in the cluster. If one processor is twice the speed of another, its CPU factor should be twice as large. CPU factors are defined by the cluster administrator. For multiprocessor hosts, the CPU factor is the speed of a single processor.
The server static resource is Boolean. It has the following values:
Specifies the value to be used as criteria for selecting a resource. Value can be numerical, such as when referring to available memory or swap space, or it can be textual, such as when referring to a specific type of host.