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The possible configurations are:
A one-node system is a one x3950 M2 server or one x3850 M2 server, with
one, two, three, or four processors and up to 256 GB of RAM.
A two-node complex is comprised of two x3950 M2 servers, with up to eight
processors, and up to 512 GB RAM installed.
A three-node complex is comprised of three x3950 M2 servers, up to 12
processors, and up to 768 GB RAM installed.
A four-node complex is comprised of four x3950 M2 servers, up to 16
processors, and up to 1 TB RAM installed.
Note: At the time of writing, only Windows 2003 Enterprise and Datacenter
64-bit editions, RHEL 5 64-bit, and SLES 10 64-bit support this amount of
memory. See 2.6, "Operating system scalability" on page 66 for details.
Partitioning
Partitioning is the concept of logically splitting a multinode complex into separate
systems. You can then install an operating system on a partition and have it run
independently from all other partitions. The advantage of partitioning is that you
can create and delete partitions without having to recable the complex. The only
requirement is that partitions be formed on node boundaries.
The interface where you set up and maintain partitions is an extension of the
Remote Supervisor Adapter II Web interface. It is used to create, delete, control,
and view scalable partitions.
Multinode complexes support partitioning on node boundaries. This means, for
example, you can logically partition your 2-node 8-way system as two 4-way
systems, while still leaving the complex cabled as 2 nodes. This increases
flexibility. You can reconfigure the complex by using the Web interface without
changing the systems or cabling.
For more information about multinode complexes and partitioning, see
Chapter 4, "Multinode hardware configurations" on page 195.
1.4 x3950 M2 Windows Datacenter models
IBM offers Windows 2003 Datacenter Edition as part of the following two IBM
offerings, which are described in this section:
IBM Datacenter Unlimited Virtualization
IBM Datacenter Unlimited Virtualization with High Availability
Chapter 1. Technical overview
15
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