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Preface
This publication is intended to familiarize data pro-
cessing personnel with the characteristics of IBM 3350
Direct Access Storage. The reader should have prior
knowledge of direct-access storage devices and
concepts.
The publication lists the functional characteristics and
describes the record format, capacity, and timing
characteristics. A list of all commands executed by the
3350 is included in the Channel Commands section.
Suggested operator instructions are included in the
Operator Controls and Indicators section.
The following publications are recommended for
detailed information con<:;erning the subjects covered
in this manual:
•
IBM System/370 Principles of Operation, Order
No. GA22-7000
•
Reference Manual for IBM 3830 Storage Control
Model 2, Order No. GA26-1617
Third Edition (April 1977)
•
Reference Manual for IBM Integrated Storage
Control, Order No. GA26-1620
•
The functional characteristics manual applicable to
the parent system. Order numbers for functional
characteristics manuals can be found in the IBM
System/ 360 Bibliography, Order No. GC20-0360
and System
I
3 70 Bibliography, Order No.
GC20-0001.
•
The Data Processing Glossary, Order No. GC20-
1699, defines terms related to direct-access storage
devices.
•
Additional information for use when planning a
3350 installation can be found in the 3350/ 3344
Installation and Conversion Guide, Order No.
GC20-1780.
If
IBM 3350s are part of a system which includes the
IBM 3850 Mass Storage System, certain attachment
restrictions may apply. These restrictions are detailed
in the IBM 3850 MSS Principles of Operation,
Order No. GA32-0029.
This publication replaces and makes the second edition of Reference Manual for
IBM 3350 Direct Access Storage, Order No. GA26-1638-1, obsolete. The
contents of Technical Newsletter GN26-0326 has been incorporated into this
edition. Changes or additions are indicated by a vertical bar to the left of the
change.
Changes or additions to the specifications contained in this publication are
periodically made. Before using this publication in connection with the operation
of IBM equipment, contact the local IBM Branch Office for revisions.
Copies of this and other IBM publications can be obtained through IBM Branch
Offices.
A form for reader's comments is provided at the back of this publication. If the
form has been removed, send your comments to the address below.
This manual was prepared by the IBM General Products Division, Technical
Publishing, Department G26, 5600 Cottle Road, San Jose, California 95193.
©Copyright International Business Machines Corporation 1975, 1976, 1977.
ii
IBM 3350 Reference Manual
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