Chapter 5. Sizing, Considerations, and Recommendations

Currently the IBM sizing service for J.D. Edwards is able to provide pre-sales support for two-tier implementation only. In a two-tier implementation the enterprise server functions as the central database server, supporting clients running OneWorld business logic.

Configuration can be changed very rapidly in the field, instantly, as the requirements of business dictate. Additional servers can be added on an application basis, such as Web, File, Print, without having to rewrite applications and without need of application programmers for the new systems.

The approach to sizing J.D. Edwards’ OneWorld on the IBM Netfinity platform is the same as sizing any hardware with an application, that is, to simply identify individual components, such as:

Network operating system

Systems management software

Networking software

Applications

Hardware platform components

When individual components have been identified, determine the individual requirements of each, then total them up to define the overall requirements. This is a very simple overview of a sizing process. There are many other aspects to this, which are too many to consider discussing here and best left to a separate book on the subject of sizing methodology.

This simple approach does lead to a methodology of sizing that will allow flexibility within individual components, which is very important in today’s rapidly and ever changing IT and business environments.

Before submitting a sizing request to IBM, it is strongly suggested that you read and understand the sizing process of J.D. Edwards’ OneWorld as it discusses points that you may have not considered.

Note: This chapter covers the sizing requirements of J.D. Edwards’ OneWorld versions B73.3 and B73.3.1 only.

It is recommended that you carefully read 5.2, “Hardware Considerations” on page 36 and 5.3, “Software Considerations” on page 50.

While considering your customer’s requirements, you should take notes as you read. This overall approach will ensure that you have made careful deliberation of both hardware and software. Once you have reviewed the hardware considerations and software considerations, review 5.6, “Requests for Sizing” on page 66.

© Copyright IBM Corp. 1999

35

Page 47
Image 47
IBM B73.3 manual Sizing, Considerations, and Recommendations