Converting to DFSMSrmm from CA-1

50 Converting to DFSMSrmm from CA-1

If you plan to use one of the other processes, you will still find that the information

we discuss and present is useful. Therefore, we suggest that you review and use

the information and learn from the experiences and knowledge that we draw on

to put the process together.

DFSMSrmm provides functions that help with the conversion process. For

example, you can use the DFSMSrmm running modes — manual, record,

warning, and protect — to help you start DFSMSrmm on the same system on

which you run CA-1. You can start DFSMSrmm in manual mode and use the

DFSMSrmm commands and utilities without DFSMSrmm recording tape activity.

Any mode other than manual activates the DFSMSrmm tape recording function.

By using the different modes, you can use DFSMSrmm to gain experience and to

educate those that are involved in the conversion.

As we describe the conversion process and take you through it, we identify

where you should perform testing and what type of testing to perform. You do not

test the DFSMSrmm product, but test your use of the product to ensure that

DFSMSrmm can meet your needs. Testing is performed and described in:

 Chapter 3, “Preparing the environment” on page 59

 Chapter 6, “Data extraction” on page 215

 Chapter 7, “Building the CDS” on page 337

 Chapter 9, “Cutover to production” on page 431

Once you have converted to DFSMSrmm, take advantage of the functions

provided in the DFSMSrmm product.

2.3 Conversion stages

In this redbook we present information sequentially, in the order of the stages in

the conversion process. However, your route through the process probably will

not follow the sequential stages exactly. At times you will have to repeat a stage

or step after modifying DFSMSrmm or the data. Such repetition will help you get

as close as possible to the DFSMSrmm setup that will meet your requirements.

Note: Before starting DFSMSrmm, ensure that you have read and understand

the information provided in Chapter 3., “Preparing the environment” on

page 59. If you start DFSMSrmm with unsuitable options, you can potentially

have an impact on your CA-1 environment.

Note: Ensure that your release of DFSMSrmm has the latest PTFs applied.

Chapter 2. Planning for conversion 51

The conversion process flow is diagrammed in Figure 2-1.

Figure 2-1 Conversion process flow

You can see that you must follow the same basic process in both test and

production environments. In this book we guide you through the conversion

process in a test environment. When you actually perform the conversion in

production, you will be able to execute the steps easily with minimum risk.

If you have multiple MVS images or a shared disk complex, you must repeat

several of the conversion stages for each image or complex. We recommend

which stages to repeat at the time we describe the stage.

The conversion stages are:

 Preparing a conversion plan

 Learning about DFSMSrmm

Test

DFSMSmm

Activate

DFSMSmm

Test System

Test

DFSMSmm

Production System

Conversion and Load

DFSMSmm CDS

Extract

Analyze Current

Tape Management

Customize and

Start DFSMSmm

Activate

DFSMSmm

Customize and

Start DFSMSmm

Extract

Conversion and Load

DFSMSmm CDS

Production

Cutover

Analyze Current

Tape Management

Validate Database

Conversion

Validate Database

Conversion