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Table 19. Recommended Application-System Configurations
Number of
Terminals
DS990
Model
Recommended
Disks
1-4
5-8
9-12
13-16
Model and disk depend on size
and characteristics of appl ication
data base.
Appendix E
Disk Requirements
Table 20 gives the storage size (in megabytes and in
sectors) of each of the basic disk packs. The table
also shows the percentage of the disk pack that
would be used by an installed DXIO operating
system. Table 21 gives the disk-space requirements of
each of the major software kits available for use
with the DS990 system.
Table 22 gives disk-space requirements for typical
files that are developed when a DS990 system is
used for software development. This data allows the
user of a software-development station to determine
file requirements based on the expected level of
activity at the installation. User-file requirements and
software-storage requirements are added and
compared to the storage available on the various
disk packs. For uses other than software
development, the user must base the estimate of
user-file size on the specific application.
Appendix F
Chassis Planning
Chassis planning involves three steps: selection of
I/O and peripheral devices, planning of direct-
current power, and assignment of controller logic
boards to chassis-slot locations. The selection of
peripheral devices depends on the application. The
hardware descriptions supply information that is
useful for device selection. For more detailed
information on any given peripheral or I/O device,
refer to the data sheet for that device.
Dc-power planning ensures that the power
consumption of the logic boards remains within the
ratings of the chassis power supply. This is seldom a
problem with the rugged 4O-ampere power supply in
the thirteen-slot chassis. The memory boards and the
high-speed disk and tape controllers draw more dc
power than an average logic board; concentrations of
these logic boards in one chassis can exceed the
Recommended
Memory
(K Bytes)
Recommended Languages
and Utilities
71
128
192
256
384
All configurations support
FORTRAN, COBOL, BASIC,
RPG II, DBMS 990, Pascal,
or Sort/Merge.
Table 20. Disk-Pack Sizes
Percentage of
Disk-Pack Size
System Disk
Used by
Disk
(M Bytes)
(Sectors)
DX10 Object
OS31
2.8
9,744
65
OS10*
4.7
16,320
39
OS25
22.3
77,520
8
OS50
44.6
154,850
4
*Two disks per drive
Table 21. DX10 Software Sizes
Disk Space
as Installed
Memory
Description
(M Bytes)*
(K Bytes)
Object
1.82**
52
FORTRAN Object
0.52***
32
COBOL Object
0.23t
32
BASIC Object
0.25
32
Business BASIC
0.25
32
Object
R PG II Object
0.56tt
37
Pascal Object
1.50
64
3780 Object
0.45
19
Sort/Merge Object
0.24
32/64
* A sector has 288 bytes.
**1.82M bytes include two terminals.
***0.52M bytes include 0.17M bytes for compiler
and 0.35M bytes for run time.
to.23M bytes include 0.12M bytes for compiler
and 0.11 M bytes for run time.
ttO.56M bytes include 0.3M bytes for compiler
and 0.26M bytes for run time.
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