Micro-Partitioning

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Micro-Partitioning is a form of Logical partitioning which was introduced by IBM on systems using the POWER5 processor. Micro-partitions are DLPARs which run in the Shared Processor Pool and which share physical processors rather than have them dedicated. The Shared Processor Pool can support up to ten times as many operating system images as there are physical processors. There is no binding between OS images and physical processors; instead the Hypervisor allocates processing resource according to scheduling rules defined when creating the partition. The Hypervisor is a function of the system firmware and is present on all POWER5 servers whether partitioning is being used or not.

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