Resource Management; Dynamic Reconfiguration - Fujitsu SPARC Enterprise M8000 Overview Manual

2.3

Resource Management

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

Dynamic Reconfiguration

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PCI Hot-plug
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Capacity on Demand
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Oracle Solaris Zones
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2.3.1 Dynamic 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
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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
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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.
2-12 SPARC Enterprise M8000/M9000 Servers Overview Guide • December 2010