Minor z/OS notes
This chapter is not intended as a general z/OS guide, or as a guide to the AD-CD systems. However, several common questions or problems are discussed here.
12.1 How much storage for z/OS?
Starting with z/OS 2.3 a minimum of 2 GB System z storage (memory) is required1 when running z/OS under zPDT. (A minimum of 8 GB is required on other systems.) This does not mean that 2 GB is a practical system; it very much depends on what you are running with z/OS. The 2 GB size might be practical for a simple TSO system, with a few users and ...

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