Further Capacity Planning Considerations - IBM p5 590 System Handbook

considered. Once the total bandwidth requirements and the total numbers and
types of adapters have been determined, the sizing process must match these
with the bandwidth and numbers and types of adapters supportable by each I/O
drawer.

5.3.2 Further capacity planning considerations

The implementation of the same application in different environments can result
in significantly different system requirements. There are many factors that can
influence the degree of success in achieving the predicted results. These include
changes in application design, the way users interact with the application, and
the number of users who may use the applications. The key to successful
capacity planning is a thorough understanding of the application implementation
and use of performance data collected.
Proper capacity planning can be difficult since every client environment is
unique. Usually there is not enough information to make the best decision.
Therefore, you must take a realistic approach. And if you make proper
assumptions, you can reach an adequate solution.
For more detailed information about capacity and sizing consideration, refer to
publication IBM Sserver pSeries Sizing and Capacity Planning: A Practical
Guide, SG24-7071.
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Chapter 5. Configuration tools and rules