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File No. S360-20
GC28- 6551-12- os

Systems Reference Library

IBM System/360 Operating System:
Storage Estimates

This publication is intended for three types of
users: system planners" system programmers, and
problem programmers. It contains instructions"
formulas, and tables that can be used to
estimate the main and auxiliary storage
requirements for any machine configuration,
control program, and control program option of
the IBM system/360 Operating system. Main
-storage requirements are divided into two
categories: fixed main storage and dynamic main
storage. Fixed main storage contains the
resident portions of the control program and the
optional services and load modules that can be
made resident to improve the performance of the
operating system. Dynamic main storage is the
area where program processing is done.

Each type of user can use this publication
differently .