OS/390 Parallel Sysplex Configuration, Volume 2: Cookbook

1.6.1.2 CF Sizer

The CF Sizer is a Web-based tool that runs on an IBM Web server and can help

you estimate all your IBM CF structures storage requirements. It simplifies the

task of estimating CF structure storage by asking questions based on your

existing configuration. If you are not sure where to get the data to answer the

questions, help functions are provided that direct you to the source of the data

on your system.

Some of the functions provided by the CF Sizer include:

Select a single structure to size for any IBM product or element (IMS, DB2,

JES, and so forth.)

Select and size related structures for an IBM product or element (such as

the DB2 group buffer pools (GBPs) or the lock structure).

Select and size all related structures for a particular resource or data

sharing function (like CICS record-level sharing (RLS) that involves different

products or elements such as SMS and CICS).

Create CFRM policy statements based on your input.

Use context-sensitive helps to locate information about your data

The CF Sizer sizes the selected structures and generates the SIZE value, or the

SIZE and INITSIZE values, for the CFRM policy. It always calculates the structure

size based on the appropriate CFLEVEL for the CF. In addition, you can cut and

paste the sample CFRM statements that the tool generates into your own CFRM

policy on the OS/390 system.

The CF Structure Sizer provides help windows for every structure. Click the Help

link and a help window opens that describes the input parameters.

1.6.2 Sample CF Storage Map

Figure 5 on page 52 shows an example of a storage allocation in two IBM 9674

CFs, based on the recommended

dual CF

configuration, and based on

recommended initial starting values in the CF for a Parallel Sysplex with up to

four images.

Chapter 1. CPC and CF Configuration in Parallel Sysplex

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