page of GC20-1806-9 As Updated April 1, 1981 by TNL GN25-0834 Tenth Edition (March 1979)
This edition (GC20-1806-9) together with Technical Newsletters GN25-0491, dated August 1, 1979 and GN25-0834, dated April 1, 1981
applies to Release 6 PLC17 (Program Level Change) of the IBK Virtual Machine Facility/370 and to all subsequent releases until otherwise
indicated in new editions or Technical Newsletters.
Technical changes and additions to text and illustrations are indicated bv a vertical bar to the left of the change.
Changes are periodically made to the information contained herein;
before using this publication in connection with the operation of IBK systems, consult the IBM System/370 Bibliography, Order No. GC20-0001, for the editions that are applicable and current.
It is possible that this material may contain reference to, or
information about, IBM products (machines and programs), programming, or
services which are not announced in your country. such references or
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such IBM products, programming, or services in your country.
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© Copyright International
1974, 1975, 1976, 1977,
Business Machines Corporation
1979, 1981
1972, 1973,

This book is for those persons responsible
for the operation and administration of a VM/370 system.
This operator's guide describes some of
the hardware of the system/370 as well as
some user virtual machine requirements.
The CMS Batch Facility is the only batch
operation discussed in this publication.
For general information on how to run batch
jobs in VM/370 virtual machines (other than
CMS), refer to the !ir1yal Order No. GC20-1821. To manage V8/370 resources effectively,
a system operator should be familiar with
the operation and hardware requirements of System/370 input/output devices and should
know the broad concepts of computer
operations. In addition, the system operator should be familiar with the use
and capability of the Interactive problem
Control System component of Details of this major component are
contained in the IBM virtual Machine £ontrQ! Eysty (!R£E) Order No.
GC20-1823.
If your installation uses the VM/370 Remote Spooling Communications Subsystem
(RSCS), the system operator is generally
the operator of the RSCS virtual machine as
well as of the real machine at the
installation. For details on how to operate
the RSCS virtual machine, refer to the IBM !!rtual Q§er's Order No. GC20-1816. Preface
There are five sections in this
publication. The first section discusses
the Operational control of VM/370 under
normal and adverse conditions. The next four are the "how-to-do-it" sections. Wherever possible, subject matter adheres
to an alphabetic arrangement. The appendix
contains a summary of operator and user
commands.
The following terms in this publication
refer to the indicated support devices: • "2305" refers to IBM 2305 Fixed Head
Storage, Models 1 and 2. • "270x" refers to IBM 2701, 2702, and 2703 Transmission Control Units or the
Integrated Communications Adapter (ICA)
on the System/370 Model 135. • • • • "3330" refers to the IBM 3330 Disk
storage, Models 1, 2, or 11; the IEM 3333 Disk Storage and Control, Models 1
or 11 ; and the 3350 Direct Access
Storage operating in 3330/3333 Model 1
or 3330/3333 Model 11 compatibility mode. "3340" refers to the IBM 3340 Disk
Storage, Models A2, Bl, and B2, and the
3344 Direct Access Storage Model B2. "3350" refers to the IBM 3350 Direct
Access Storage Models A2 and B2 in
native mode. "3704", "3705", or "370x" refers to IEM Communications 3704 and 3705 Controllers.
To help the system operator gain insight • in virtual machine concepts and
capabilities, refer to the IBM Virtual • No. GC20-1800. This book briefly discusses
virtual storage, virtual machines feature
The term "3705" refers to the 3705 I and
the 3705 II unless otherwise noted. "2741" refers to the IBM 2741 and the
3767, unless otherwise specified.
and facilities of V8/370. I • I This publication describes VM/370 system
startup, logon, VM/370 commands, special I • service programs, user privilege classes, I as well as other data necessary to manage
the resources of the system on a daily • tasis. "3800" refers to the IBM 3800 printing
Subsystem. "3850" refers to the IBM 3850 Mass Storage System. "3270" refers to a series of display
devices, namely the IBM 3275, 3276,
3277, 3278 Display Stations. A specific
device type is used only when a
distinction is required between device
types.
Preface iii