The following SMEs are critical to the sizing process.
System administrators are typically tasked with monitoring resource utilization on a machine. It is best to capture resource utilization statistics overall, by application, and by component. This way, you can isolate and identify system bottlenecks. Additionally, it allows you to identify activity at high, low, and average peaks. You will then know how much activity is occurring and when to allocate resources appropriately.
Network administrators are typically tasked with monitoring network resource utilization. This is especially important in a multi-tiered physical architecture where data is transferred over the network between machines and across security domains.
The DBA is critical to the sizing process and must have a thorough understanding of the database design, database volumes, indexing, and database and query optimization. The DBA must be able to work with developers so queries are constructed to take advantage of database optimization features. For instance, if a request is taking a long time to run and it appears that the WebFOCUS Reporting Server is just waiting for the database server to respond, then we need the DBA to verify that the database server is still processing the request.
WebFOCUS Administrators must work together with system, network, and database administrators on sizing. They will need to perform WebFOCUS administrative tasks during the sizing and benchmarking process. The other administrators will expect the WebFOCUS Administrator to explain how WebFOCUS and associated applications work.