Worksheets

The worksheets that follow can help determine the hardware capacity requirements for a particular OS/2 2.0 configuration. The first worksheet provides suggestions for estimating memory requirements. The second provides suggestions for estimating hard disk requirements. If a range is given, refer to the notes to help determine the configuration.


Table: Memory-Estimating Worksheet
COMPONENT REQUIRED MEMORY USER CONFIG.
Base Operating System 3.0MB  
High Performance File System (HPFS) 0.3MB  
DOS Session(1)    
     
DOS Full Screen 0.3MB  
Additional Session 0.2MB  
     
DOS Window 0.3MB  
Additional Session 0.3MB  
WIN-OS/2 Session    
     
First Session 2.0MB  
Additional Session 1.0MB  
Active Spooling 0.5MB  
Dynamic Data Exchange (DDE) 0.2 - 0.5MB  
Clipboard 0.2MB  
System Performance Buffer(2) 0.5MB  
Applications by Category(3)    
     
Communications 0.5MB  
Compilers 0.8MB  
Database 1.0MB  
Engineering/Scientific 1.0MB  
Games 0.2MB  
Graphics 1.0MB  
Spreadsheets 1.0MB  
Tools 0.5MB  
Utilities 0.3MB  
Word Processors 0.5MB  
Totals    
(1)
Under OS/2 2.0, the amount of memory for each DOS session is dependent upon the characteristics of DOS, particularly its use of extended, expanded, or DOS DPMI memory.

(2)
This additional system memory allows better performance in conditions such as application loading, termination, and print spooling.

(3)
Memory requirements for specific applications are provided by the suppliers. The numbers given here are only guidelines to help determine total memory size.



Table: Hard Disk-Estimating Worksheet
COMPONENT REQUIRED MEMORY USER CONFIG.
Operating System(4)   15MB - 30MB
File System Structures    
     
HPFS(5) 3MB - 5MB  
FAT 64KB  
Printer Device Drivers(6) 250KB - 1MB  
Print Spool File Space(7) 1MB - 5MB  
Swap File(8) 6MB - >8MB  
Application Development(9)    
     
Toolkit 9MB  
Online Reference 8MB  
Development Tools 8MB  
Debug Kernel & Symbols 4MB  
Compiler & Libraries 9MB  
IBM WorkFrame/2 2MB  
Other Applications & Tools(10)    
Totals    

(4)
See Table 7 for a detailed breakdown of space requirements for optional features.

(5)
The HPFS space requirement is approximately 5% of the disk partition size.

(6)
Printer drivers are listed in Appendix A. The sizes of specific drivers can be found by checking the OS/2 2.0 printer driver installation diskettes.

(7)
The spool file requirement varies depending on the size and number of jobs to print. For a single user system, 1MB should be adequate.

(8)
The swap file size depends on the amount of physical memory available on the system and the kinds of applications being run. See Table 1 for a breakdown of swap file default sizes.

(9)
If the system will be used for software development, install a compiler and/or an assembler with the associated libraries and debug tools. See "Application Development Tools" for more information.

(10)
Applications and other tools that are separate from the operating system have their own space requirements. Refer to application documentation for requirements. When possible, plan ahead for for future application purchases and reserve extra space for them.