Partitioning options

Diagram

Two x440s, one with eight processors, one with four processors.

This configuration can be partitioned in one of two ways:

￿One partition of 12 processors

￿Two partitions, one with four and one with eight processors

Two x440s with 16 processors. This configuration can be partitioned in one of two ways:

￿One partition of eight processors

￿Two partitions each with eight processors

Connecting one RXE-100 with 12 slots to two different nodes, referred to as twin-tailing,is supported (see Figure 3-10 on page 82).

Although not supported on the x440, the maximum configuration that System Partition Manager supports is four nodes with four processors each and four expansion enclosures. The expansion enclosures are connected, one to each node or twin-tailed between two. This makes possible a partition of 16 processors, 256 GB of memory, and 72 PCI-X adapter slots.

Each partition that System Partition Manager creates will be very similar to the stand-alone servers we use today. Once they are defined, they can:

￿Be powered on and off individually

￿Be capable of supporting one instance of an operating system, or in the case of VMware, one host operating system

￿Have a single, contiguous memory space and access to all associated adapters

The following is a list of characteristics that are in the initial release of System Partition Manager:

￿The IBM Director administrator specifies which nodes (chassis) and Remote I/O Enclosures are members of a complex, and assigns a name to the complex.

￿System Partition Manager is used to define the partitions. A partition of two or more nodes will have one designated as the primary node.

￿The CD-ROM and diskette drives are active on the primary node. The other nodes have their CD-ROM and diskette drives disabled. The other nodes can operate in “headless” mode, which means the server operates without a console (keyboard, video, mouse) attached.

152IBM ^xSeries 440 Planning and Installation Guide

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IBM 440 manual Partitioning options Diagram