IBM 3480 Service manual

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IBM

3480

Magnetic

Tape

Subsystem

Storage

User's

Reference

Subsystem

Library

GC35-0099-3

Fourth

Edition

(November

1987)

This

is a

revision

and

makes

obsolete GC35-0099-2.

Changes

additions

the

text

illustrations

will

indicated

vertical

line

the

left

the

change.

References

this

publication

IBM products, programs,

services do

not

imply

that

IBM

intends

make

these

available

all

countries

which

IBM operates.

Any

reference

IBM

licensed

program

this

publication

not

intended

state

imply

that

only

IBM's

licensed

program

may

be used.

Any

functionally

equivalent

program

may

used

instead.

Publications

are

not

stocked

the

address given below.

Requests

for

IBM

publications

should

made

your

IBM

representative

the

IBM

branch

office

serving

your

locality.

A form for

reader's

comments is provided

the

back

this

publication.

the

form

has

been

removed, comments

may

addressed

IBM

Corporation,

General

Products

Division,

Department

61C, Tucson, Arizona, U.S.A. 85744. IBM

may

use

distribute

whatever

information

you

supply

any

way

believes

appropriate

without

incurring

any

obligation

you.

International

Business

Machines

Corporation

1984,

1986, 1987

Preface

Organization

This

manual

gives

programmers

information

about

using

the

IBM

3480

Magnetic

Tape

Subsystem.

For

complete

information

about

specific macros,

commands,

functions,

consult

the

other

manuals

listed

"Related

Publications."

This

manual

contains

the

following:

•

"Chapter

Introduction,"

gives

overview

ofthe

IBM

3480

Magnetic

Tape

Subsystem

and

the

software

requirements

for

the

3480

•

"Chapter

Tape

Characteristics,"

describes

the

format

IBM

standard

data

set

label

•

"Chapter

Modifying

Existing

Code," describes

the

changes

code

that

are

needed

use

the

3480

including

DCB

parameters,

JCL

changes,

and

modifications

JFCB

•

"Chapter

Controlling

the

I/O Device," describes

the

changes

the

NOTE, POINT,

and

DEVTYPE

macros,

well as

the

new

SYNCDEV

macro

•

"Chapter

Displaying

Messages," describes

the

new

MSGDISP

macro

that

allows messages

displayed

the

operator

•

"Chapter

Managing

and

Controlling

Data

Sets,"

describes

the

changes

for

DFHSM

when

using

the

3480

•

"Chapter

Recording

Error

Statistical

Information,"

describes

how

use

the

3480 for

the

IMS/VS log

tape

and

error

and

statistical

information

•

"Chapter

Restrictions

Using

Sorting

Applications,"

describes

the

restrictions

DFSORT

when

using

the

3480

• "Appendix

Data

Control

Block Symbolic

Field

Names,"

describes

the

control

block

fields

• "Appendix B.

Checkpoint/Restart

Codes,"

shows

the

return

and

completion

codes for

the

IBM

3480

Magnetic

Tape

Subsystem

when

taking

checkpoint.

Preface 111

Prerequisite

Knowledge

use

this

book

effectively,

you

should

already

understand

data

management

procedures.

Publications

You

may

want

reference

information

presented

the

publications

listed

below.

IBM 3480

Magnetic

Tape

Subsystem

•

IBM

3480

Magnetic Tape Subsystem Introduction, GA32-0041

•

IBM

3480

Magnetic Tape Subsystem Planning

and

Migration Guide,

GC35-0098

•

IBM

3480

Magnetic Tape Subsystem Reference: Channel Commands,

Status

and

Sense Bytes,

and

Error Recovery Procedures, GA32-0042

•

IBM

3480

Magnetic Tape Subsystem Operator's Guide, GA32-0066

• Care

and

Handling

the

IBM

Magnetic Tape Cartridge, GA32-0047

•

IBM

Input/Output Equipment: Installation

Manual-Physical

Planning

for System/360, System/370,

and

4300

Processors,

TNL

GN22-2317

GC22-7064

• Tape and Cartridge Requirements for the

IBM

3480

Tape Drives,

GA32-0048.

MVS/Extended

Architecture

•

MVS/Extended

Architecture Checkpoint/Restart User's Guide, GC26-4139

•

MVS/Extended

Architecture System-Data Administration, GC26-4149

•

MVS/Extended

Architecture Data Administration Guide, GC26-4140

•

MVS/Extended

Architecture Data Administration: Macro Instruction

Reference, GC26-4141

•

MVS/Extended

Architecture Magnetic Tape Labels

and

File Structure

Administration, GC26-4145

•

MVS/Extended

Architecture Message Library: System Messages,

Volumes 1

and

GC28-1376

and

GC28-1377

•

MVS/Extended

Architecture Message Library: System Codes, GC28-1157

IBM 3480

Magnetic

Tape Subsystem

User's

Reference

•

MVS/Extended

Architecture,

MVS/System

Product-JES3

Version

MVS/System

Product-JES2

Version 2,

LIC

PROG 5665-291, 5740-XC6,

Routing

and

Descriptor Codes, GC28-1194

•

MVS/Extended

Architecture Installation: System Generation, GC26-4148

•

MVS/Extended

Architecture Data Facility Product: General

Information, GC26-4142

•

MVS/Extended

Architecture Conversion Notebook:

MVS/System

Product

JES2,

LIC

PROG 5740-XC6;

MVS/System

Product

JES3,

LIC

PROG

5665-291, GC28-1143

•

MVS/Extended

Architecture,

MVS/System

Product-JES3

Version

MVS/System

Product-JES2

Version

LIC

PROG 5665-291, 5740-XC6,

Job Control Language, GC28-1148

•

MVS/Extended

Architecture

MVS/System

Product Version 2 5665-291

5740-XC6, Initialization

and

Tuning, GC28-1149

•

MVS/Extended

Architecture,

MVS/System

Product Version

2-JES3

MVS/System

Product Version

2-JES2,

LIC

PROG 5665-291, 5740-XC6,

Supervisor Services and Macro Instructions, GC28-1154

•

MVS/Extended

Architecture

MVS/System

Product-JES3

Version

MVS/System

Product-JES2

Version 2,

LIC

PROG 5665-291, 5740-XC6,

System Macros and Facilities,

Volumes

and

GC28-1150

and

GC28-1151

•

MVS/Extended

Architecture,

LIC

PROG

5665-291, 5740-XC6, System

Modifications, GC28-1152

•

MVS/Extended

Architecture,

MVS/System

Product-JES3

Version

MVS/System

Product-JES2

Version

5665-291, 5740-XC6, System

Management Facility, GC28-1153

•

MVS/Extended

Architecture,

MVS/System

Product-JES2

Version

5740-XC6 Operations:

JES2

Commands, SC23-0064

•

MVS/Extended

Architecture,

MVS/System

Product

JES2

Version 2,

LIC

PROG

5740-XC6, Initialization

and

Tuning, SC23-0065

•

MVS/Extended

Architecture,

MVS/System

Product-JES3

Version

LIC

PROG

5665-291, Operations:

JES3

Commands, SC23-0063

•

MVS/Extended

Architecture System,

MVS/System

Product-JES3

Version 2,

LIC

PROG 5665-291, Initialization

and

Tuning, SC23-0059

•

MVS/Extended

Architecture Debugging,

MVS/System

Product-JES3

Version 2,

MVS/System

Product-JES2

Version 2,5665-291, 5740-XC6,

Preface

MVS/370

Handbook,

Volumes

through

5, LC28-1l64,1 LC28-1l65, LC28-1l66,

LC28-1l67

and

LC28-1l68.

•

MVS/370

Data Facility Product, 5665-295, Checkpoint/Restart, GC26-4054

•

MVS/370

Data Facility Product, 5665-295, System Generation Reference,

GC26-4063

•

MVS/370

Data Facility Product, 5665-295, Data Management Macro

Instructions, GC26-4057

• MVS/370 Data Management Services, Data Facility Product

5665-295,

GC26-4058

•

MVS/370

Data Facility Product, 5665-295, Data Management, GC26-4056

•

MVS/370

Magnetic Tape Labels

and

File Structure, 5665-295, GC26-4064

•

MVS/370

Message Library: System Messages,

Volumes

and

GC28-1374

and

GC28-1375

•

OS/VS

Message Library: System Codes, GC38-1008

•

OS/VS

Message Library:

VS2

Routing

and

Descriptor Codes, GC38·1102

• MVS/370 Installation: System Generation, GC26-4166

•

MVS

JCL

MVS/System

Product-JES2

Release 3.3,

MVS/System

Product-JES3

Release 3.1,

LIC

PROG 5740-XYS,

-XYN,

GC28-1300

•

MVS/370

Data Facility Product: General Information, GC26-4160

•

OS/VS2

System Programming Library: Debugging Handbook,

MVS/System

Products,

LIC

PROG

5740-XYN,

-XYS,

Volumes 1 through

3, GC28-1047, GC28-1048,

and

GC28-1049

• OS/

VS2

MVS

Supervisor Services

and

Macro Instructions, GC28-0683

• OS/

VS2

MVS

System Programming Library: Initialization

and

Tuning

Guide, GC28-0681

•

OS/VS2

MVS

System Programming Library: Supervisor, GC28-0628

•

OS/VS2

MVS

System Programming Library: System Management

Facilities, GC28-1030.

All five volumes

may

ordered

under

one

order

number,

LBOF-I015.

IBM 3480

Magnetic

Tape

Subsystem

User's

Reference

VMjSP

and

VMjHPO

VSEjSP

• Virtual Machine/System Product Planning Guide

and

Reference,

SC19-6201

• Virtual Machine/System Product High Performance Option Planning

Guide

and

Reference, SC19-6223.

•

IBM

Virtual Storage Extended/System Package Hardware

and

Software

Support Extensions, Version 2 Release

SC33-6184.

Other

Publications

•

OS/VS

Sort/Merge Programmer's Guide Program Product 5740-SM1,

SC33-4035

• Data Facility Hierarchical Storage Manager: Version 2 Release 3.0

Installation

and

Customization Guide, SH35-0084

• Data Facility Hierarchical Storage Manager: Version 2 Release 3.0

System Programmer's Guide, SH35-0085

• Data Facility Hierarchical Storage Manager: Version 2 Release 3.0

System Programmer's Reference Guide, SH35-0083

•

OS/VS2

MVS

and

Stand-Alone Versions: Input/Output Configuration

Program,

LIC

PROG 5740-XYN,

-XYS,

User's Guide and Reference,

GC28-1027

• Environmental Recording Editing and Printing (EREP) Program,

GC28-1178

• Data Facility/Data Set Services,

LIC

PROG 5740-UT3, User's Guide

and

Reference, SC26-3949

•

IBM

Input/Output Equipment: Installation

Manual-Physical

Planning

for System/360, System/370, and

4300

Processors, GC22-7064

•

IBM

System/370 Installation Manual: Physical Planning, GC22-7004.

Preface

Vll

Contents

Chapter

The

IBM

3480

Magnetic

Tape

Subsystem

...........

IBM

3480

Magnetic

Tape

Subsystem

Operating

Mode

...............

Conventions

Used

...........................................

Chapter

Tape

Characteristics

..........................

Changed

Format

IBM

Standard

Data

Set

Label

2 (HDR2/EOV2/EOF2) 5

Chapter

Modifying

Existing

Code

MVS

Systems

..........

Selecting

Data

Set

Options

....................................

DCB

Parameters

..........................................

Coding

the

Block Size

and

Logical Record

Length

Operands

........

Constructing

Data

Control

Block

...........................

Specifying

JCL

Options

......................................

Modifying

the

Job

File

Control

Block (JFCB)

.....................

Setting

the

Header

Label

Block

the

JFCB

for High·Speed

................................................

Example

How

Code

OPEN(J)

...........................

MVS Block

Count

Checking

..................................

User

Exits

..............................................

EXCP

Routines

..........................................

User

Programs

..........................................

Performance

Options for

IEBGENER

...........................

IEBGENER

Storage

Requirements

...........................

Chapter

Controlling

the

110

Device

..................•..

Controlling

High-Speed

(NOTE/POINT)

...................

How

the

Physical

Block

Identifier

Works

......................

Retrieving

the

BLOCKID

..................................

Performing

the

High-Speed

...........................

Comparing

Conventional

and

High-Speed

..........

Examples

How

Code NOTE

and

POINT

...................

NOTE-Provide

Relative

Position

(BPAM

and

BSAM)

............

Completion Codes from NOTE

..............................

POINT

-Moving

Tape

a Relative Block

Position

(BP

and

BSAM)

...............................................

Completion Codes from

POINT

..............................

Controlling

Data

Synchronization

(SYNCDEV)

...................

Example

How

Code SYNCDEV

.........................

SYNCDEV-Synchronize

Device

.............................

SYNCDEV-List

Form

....................................

SYNCDEV-Execute

Form

.................................

Completion Codes from SYNCDEV

...........................

Obtaining

I/O Device

Characteristics

(DEVTYPE)

.................

Contents

Table of contents

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