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Chapter 2. Architecture and technical overview 63
unpartitioned system. You can create an entirely new system configuration, or you can create
a system configuration based upon any of the following:
Performance data from an existing system that the new system is to replace
Performance estimates that anticipate future workloads that you must support
Sample systems that you can customize to fit your needs
Integration between the SPT and both the Workload Estimator (WLE) and IBM Performance
Management (PM) allows you to create a system that is based upon performance and
capacity data from an existing system or that is based on new workloads that you specify.
You can use the SPT before you order a system to determine what you must order to support
your workload. You can also use the SPT to determine how you can partition a system that
you already have.
Figure 2-19 shows the estimated Hypervisor memory requirements based on sample
partition requirements.
Figure 2-19 IBM System Planning Tool window showing Hypervisor requirements
Important: We recommend using the IBM System Planning Tool to estimate Hypervisor
requirements and to determine the memory resources that are required for all partitioned
and non-partitioned servers.