Converting to DFSMSrmm from TLMS

42 Converting to DFSMSrmm from TLMS

Figure 1-28 Catalog status tracking

1.2 Conversion process overview

The conversion process we describe in this book transfers your tape data

information from your current tape management system database to the

DFSMSrmm database, while continuing to meet your tape management

requirements. Figure 1-29 shows how detailed data about tape volumes is

converted to DFSMSrmm format.

EDGRMMxx:

OPTION -

SYSID(SYS1) -

CATSYSID(SYS1,SYS2)

Catalog/Uncatalog

Data sets

EDGRMMxx:

OPTION -

SYSID(SYS3) -

CATSYSID(SYS3)

EDGRMMxx:

OPTION -

SYSID(SYS2) -

CATSYSID(SYS1,SYS2)

DFRMM

CAS

CAS

DFRMM

DFSMSrmm CDS

Key VRS St. Syst Volume

D DSN1 WC U SYS1 000001

D DSN2 WC C SYS2 000002

D DSN3 WC U SYS3 000003

D DSN4 SI C SYS1 000004

D DSN5 SI C SYS3 000005

V 000001 MASTER

V 000002 MASTER

V 000003 MASTER

V 000004 MASTER

V 000005 MASTER

C CATSYNCH : YES

CAS

Catalog/Uncatalog

Da ta sets

ICF-UCAT1

DSN 1 000001

DSN 2 000002

DSN 4 000004

ICF-UCAT2

DSN 3 000001

DSN 5 000002

DFRMM

CAS = Catalog Address Space

SYS1 SYS2

SYS3

Chapter 1. Introduction 43

Figure 1-29 Conversion process overview

The data transfer is really a three-phase method using programs and tools

shipped with the DFSMSrmm product. You use the programs and tools described

in “Chapter 6, “Data extraction” on page 205 to extract the required data that is

used in the conversion process.

 The first phase is the data extraction phase, where the data that DFSMSrmm

needs is derived from your TLMS data.

 The second phase, the convert phase, is the manipulation of the extracted

data into a format that is, when loaded into a VSAM KSDS, useful to

DFSMSrmm. The EDGCNVT and EDGCVOVL programs accomplish the

second phase.

 The third phase, referred to as the postprocessing phase, is the loading of the

VSAM KSDS, the addition of the DFSMSrmm CDS control record, and the

utility run that cross checks the records in the DFSMSrmm database, one

against the other, to verify completeness and accuracy.

Extraction

Report

VRS

Records

OWNER

Records

ADDVRS

Commands

BIN

Records

VOLUME

Records

DSN

Records

Additional

Tape

Management

Policies

Building CDS

- Conversion -

O-Records

K-Records

Macros

L-Records

D-Records

Old TMS

Policies

Old TMS

Retention

Old TMS

Data Base

DFSMSrmm

CDS

UXTABLE

Loading CDS

Load

UXTABLE

Build

UXTABLE

44 Converting to DFSMSrmm from TLMS

The conversion process involves more than simple data transfer. It includes

testing required functions, validating requirements, and educating users on the

changes involved. In this book we describe the three phases of transferring data

and help you plan for execution of the complete conversion process.

You can convert to DFSMSrmm in several different ways. For example, you could

install DFSMSrmm to manage a set of volumes that your TLMS system does not

manage. Over time you can increase the number of volumes that DFSMSrmm

manages and reduce the number of volumes that your existing system manages.

Another way of converting to DFSMSrmm — the conversion process that we

recommend, and that the rest of this book describes — is to convert all existing

volumes from your TLMS management to DFSMSrmm. You convert your current

management requirements into DFSMSrmm policies, and, after a period during

which you validate that those requirements are being met, you remove your

existing TLMS management.

Included in the conversion process is the requirement to expand or consolidate

the number of systems and tape databases. For example, you may have two tape

databases on two systems today, but you may want to convert to a single

database that is shared by the two systems or used by a single image produced

from merging the two system

s.

The process consists of the following stages:

1. Learning about DFSMSrmm

In stage 1 you ensure that you have enough knowledge about DFSMSrmm to

prepare for and plan the conversion.

2. Planing for conversion

In stage 2 you use your knowledge of your current TLMS management and

the conversion process to build a plan.

3. Starting DFSMSrmm

In stage 3 you implement DFSMSrmm on your system. You install and test

basic DFSMSrmm functions without impacting your current tape

management.

4. Analyzing current environment

In stage 4 you analyze your current tape management policies to understand

which data to convert.

5. Extracting data for conversion

In stage 5 you use the supplied data extract tools to pull details of tape data

from your TLMS management.

6. Building the DFSMSrmm CDS

In stage 6 you convert the data extracted from your TLMS to DFSMSrmm

format, and load it into a DFSMSrmm CDS ready for use.