Page of GC20-1801-10 As Updated April 1, 1981 by TNL GN25-0837 The term "3705" refers to the IBM 3705-1
and 3705-11 Communications Controllers, unless otherwise specified. The term "3270" is used in this
publication to refer to all VM/370 supported virtual machine display
consoles unless otherwise noted. A
specific device type is used only when a
distinction is required between device
types. Information about display terminal usage
also applies to the IBM 3138, 3148 and
3158 Display Consoles, when used in
display mode, unless otherwise noted. Any information pertaining to the IBM
3284 or 3286 printer also pertains to 3287, 3288, 3289 unless otherwise noted. The term "typewriter terminal" refers to
printer-keyboard devices that produce
hard-copy output only (such as the IBM
2741 Communication Terminal, the IBM
3215 Console printer-Keyboard, or the IBM 3767 Communication Terminal, Model 1
or 2, operatinq as a 2741). The term "2741" refers to the
Communication Terminal, and
3767 Communication Terminal
otherwise noted).
IBM 2741
also the
(unless The term "display device" refers to any VM/370 supported system console terminal
that displays data on a screen. Unless otherwise noted, where the term
"Attention key" is used in this
publication, the phrase "(or equivalent)" is implied. Th€ equivalent
key on the 1050 terminal is the RESET LINE key; on the 3276, 3277, and 3278
terminal, the Enter key. Each of the
terminals that can be used with the system has a key that is the
equivalent of the Attention key on the
2741 (with which you can signal an
attention interrupt). CMS/DOS is part of the CMS system and is
not a separate system. The term "CMS/DOS" is used in this publication as
a concise way of stating that the DOS simulation mode of CMS is currently
active; that is, that the CMS command
set dos on
has been previously invoked. The phrase "the CMS file system" refers
to disk files that are in CMS's 800-byte, 1K, 2K, or 4K fixed physical
block format; CMS's VSAM data sets are
not included. Unless stated otherwise, reference to
the System/370 Models 138 and 148 also
apply to Models 135-3 and 145-3,
respectively. The term "3330V" is used in this
publication for both volumes and device
addresses. When used with volumes, it
refers to a Mass Storage System volume
that has been mounted and that is
directly accessible from the processor.
When used with device addresses, 3330V refers to a device on which 3330V volumes may be mounted by the Mass Storage System. 'hen an installation installed and an IBM 3850 Mass Storage System attached to the processor,
references to 3330 can be thought of as meaning 3330Vs unless the reference is to VM/370 system residence, paginq or
spooling devices. COREQUISITE PUBLICATIONS Order No. GC20-1808 User's GC20-1810 Order No. in Order No. GC20-1821 Con!£Q! Order No. Order No. GC20-1834 l11Q Q§§ign, Order No. GA27-2749. iv IBM VM370 Planning and System Generation Guide
Page of GC20-1801-10 As Updated April 1, 1981 by TNL GN25-0837
Contents
The entries in this Table of contents are accumulative. They' list additions to this
publication by the following VM/370 System Contol Program Products: VM/370 Basic System Extensions, Program Number 5748-XX8 VM/370 System Extensions, program Nu mber 57 48-XE 1
However, the text within the publication is not accumulative; it only relates to the one SCP program product that is installed on your system. Therefore, there may be topics and
references listed in this Table of contents that are not contained in the body of this
publication. SUMMARY OF AMENDMENTS ••••••••• xvii PART 1. PLANNING FOR SYSTEM GENERATION •• 1 INTRODUCTION.. •••••••••• 3 Virtual Machine Operationg Systems •••• 3
Introduction to VM/370 System Generation .3 PERFORMANCE GUIDELINES •••••••• 7
Performance Measurement and Analysis .7
using the Performance Options ••••••• 8 Specifying a virtual=Real Machine.. .9
Reserving DASD Space for a CP Nucleus
with a Virtual=Real Area ••••••• 10 Virtual Storage Requirements ••••• 11 Specifying the Amount of virtual=Real
space Virtual Machine Assist VM/370 Extended Control-Program Support PLANNING CONSIDERATIONS FOR CMS •• CMS Storage Requirements Auxiliary storage •• Device Support CMS Libraries ••••• CMS Command Language CMS Program Language Facilities •• CMS Text processing Facility •• Limited Support of OS and DOS in CMS DL/I in the CMS/DOS Environment. CMS Disk and File Management Disk Access. ••• File Sharing CMS Disk File Format Identifying Disk Files Tape Support CMS unit Record Support. Card Reader. Card punch Card Punch (5748-XX8). Card Punch •• Printer •• Editing ••• CMS Batch Facility Saving CMS 11 17 18 19
19
19 20 21 22 23 24 24 25 25 25 26 26 27 27 28 28
28
28. 1
28. 1 29 29 29 30 PLANNING CONSIDERATIONS FOR CMS VSAM AND ACCESS METHOD SERVICES. 31
Hardware Devices Supported ••••••• 31
programming Languages Supported. •• 32
Data Set CompatibiLity Considerations. 32 ISAM Interface Program (lIP) 32 User Requirements and Considerations 33
Distribution of .VSAM and CMS •••••• 33
Planning Considerations for Installing VSAM Under CMS ••••••• 33
Planning Considerations for Installing VSAM Under CMS 33
PLANNING CONSIDERATIONS FOR CMS/DOS ••• 35 DOS/VS System Generation Considerations. 35 DOS/VSE System Generation Considerations ••••••••••••••• 35 DOS/VSE System Generation Considerations (57.!!8-XEj) ••••••••••••••• 35 When the DOS/VS System Must Be Online. 35 When the DOS/VSE system Must Be Online ••••••••••••••• 36 When the DOS/VSE System Must Be Online (5748-XE1) ••••••••• CMS/DOS Tape Handling. eMS/DOS Tape Handling CMS/DOS Tape Handling (57.!!8-!E1) Standard Label Cylinder. Standard Label Cylinder Standard Label Cylinder PLANNING CONSIDERATION FOR VIRTUAL MACHINE OPERATING SYSTEMS (OTHER THAN 36
36 37 37
36 37 37 CMS). 39
The VM/VS Handshaking Feature •••••• 39
Multiple virtual Machines Using the Same Operating System. 40 The R SCS Virtual Machine 41 RSCS Planning Considerations q1 VM/370 Using Channel Switching 42 Channel-Set Switching Facility 45 Operating Systems Using Reserve/Release. 46 Sha red DASD. .. 47 Virtual Reserve/Release. 48 VM/370 Control Program Handling of a
Reserve CCW •••••••••••• 48.1 Restrictions: Device Sharing Between
Real Processors •••••••••• 48.3 Contents vii
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