The pSeries logical partitioning structures

In either pSeries or the iSeries the systems have their respective allocations of all the related components like the processor cycles, input output, and memory slots. This logical partitioning structure is the same for all pSeries products whether they are new or used pseries installations.

Ordinarily the resources for the each of the partitions are specifically defined by the respective hardware partitions. The difference with the predecessor zSeries is that they are not completely virtualized as the zSeries. Moreover, each of the partition also has its own operating system images. It sits with the hypervisor that is available in the system software. It is this hypervisor that manages the access of the operating systems to the hardware parts.

The layers in the system thus are the Input Output devices, the processor and memory slots, the Hypervisor, the Operating System, and the Applications in that order.

Basic architecture remains the same for both iSeries and pSeries components. The only difference that exists is due to the use of different hypervisors. The one that is used for the iSeries is a derivation of the OS/400 technologies. On the other hand the pSeries hypervisor is a logical outcome of the AIX and Linux partition. The advantages with the pSeries are that the hypervisor is independent of both the operating systems.

Best part of the kernel code however are the same for both iSeries and pSeries appliances.

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