2.3Resource Management

This section explains the following functions that support dynamic reconfiguration of domain resources during system operation:

■Dynamic Reconfiguration■PCI Hot-plug■Capacity on Demand■Zones

2.3.1Dynamic Reconfiguration

Dynamic reconfiguration (DR) enables hardware resources on system boards to be added and removed dynamically without stopping system operation. DR thus enables optimal relocation of system resources. Also, if a failure occurs, DR can place the system in a state that enables active replacement of the faulty component.

Using the DR function enables additions or distributions of resources as required for job expansions or new jobs, and it can be used for the following purposes.

■Effective use of system resources

By reserving some resources, the reserved resources can be added according to changes in the work load occurring daily, monthly, or annually. This enables flexible resource allocations on the system that needs to operate 24 hours a day, every day of the year in accordance with changes in the amount of data and the work load.

■Active replacement of system resources

If a failure occurs in a CPU for a domain that has been configured with system resources of multiple system boards, the DR function enables the faulty CPU to be isolated dynamically without stopping the system. The replacement CPU can be configured dynamically in the original domain.

For details on Dynamic Reconfiguration, see the SPARC Enterprise M4000/M5000/M8000/M9000 Servers Dynamic Reconfiguration (DR) User’s Guide.

2-10SPARC Enterprise M8000/M9000 Servers Overview Guide • April 2007