-I. ----- --.1:""--- .•. __ . -1 ---- _ .. --- ---" VM/370 Storage Requirements
The followinq names are undefined during the VMFLOAD procedure if
DMKBSC, DMKRGA, and DMKRGB are deleted from the loadlist: DMKBSCER DMKRGBEN
DMKRGBIC
DMKRGAIN
The following names are undefined during the VMFLOAD procedure if DMKSSS is deleted from the loadlist: DMKSSSHV DMKSSSAS 1)MKSSSMQ DMKSSSL 1 DMKSSSI1 DMKSSSL2 DMKSSSEN DMKSSSL3 DMKSSSVA DMKSSSDE If you generate your system without the V=R option, the module DMKVSC can be deleted from the loadlist with no undefined symbols.
Direct Access Storage Requirements for CP Fiqure 15 shows how much DASD soace CP requires by followinq paragraphs describe in detail how you determine the amount of DASD space CP requires for the nucleus, error recording, warm start
data, checkpoint data, directory, saved systems data, paging, and
spoolinq space. CP Nucleus
Error Recording 1 Warm Start Checkpoint Start Directory Sa ved Syste ms
pagin g Space Spoolinq Space Total System
2 2319 varies
2
1
2
2
varies
32 50 93 cyl varies
2
1
1
2
varies
18 30 57 cyl varies
2
1
3
2
varies 40 varies
2
1
3
2
varies 40 70 53 cyl 123 cyl
Fiqure 15. DASD Space Requirements by DASD Type CP NUCLEUS DASD REQUIREMENTS varies
2
1
1
2
varies 10 15
33 cyl
The CP nucleus (without a virtual=real area) currently requires about
115 pages of disk space for resident and pageable functions.
To determine the number of cylinders required for the CP nucleus,
refer to the load map produced during system generation. One DASD page
is required for each page of fixed and pageable nucleus (for a CP nucleus without a virtual=real area). The calculations for the amount
of DASD space needed for a CP nucleus with a virtual=real area are in the" Specifying a virt ual=Real Machine" section.
lThe default is 2 cylinders but up to 9 cylinders may be specified via
the SYSERR operand of the SYSRES macro.
2These figures do not include space for the nucleus or saved systems. 90 IBM VM/370 planning and System Generation Guide

Page of GC20-1801-10 As April 1, 1981 by TNL GN25-0837 VM/370 storage Requirements
For example, if the last module entry in the load map is at page 55
(hexadecimal), 85 pages of disk space are required for CP nucleus
residence. The number of cylinders required depends on the system
residence device used; see the "Saved System DASD Requirements" section
that follows for the number of pages per cylinder each device can
accommodate.
is:
Normally, the number of cylinders required for CP nucleus residence
6 cylinders on a 2305 or 3340
5 cylinders on a 2314 or 2319
3 cylinders on a 3330 or 3333
2 cylinders on a 3350
Part 1. Planning for System Generation 90.1