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1 Author(s)
Rubsam, K.G. ; IBM Data Systems Division, P.O. Box 390, Poughkeepsie, New York 1260, USA

The IBM Enterprise Systems Architecture/370™ vastly increases the potential virtual addressability available to both system and application programs. The I/O model and the application model of permanent data are discussed to illustrate how large virtual addressability can be used to simplify application programs and improve performance. New MVS services that exploit the architecture are described. Also described are data window services, which are callable from high-level languages and provide the capability to manage very large permanent and temporary objects in virtual storage.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Systems Journal  (Volume:28 ,  Issue: 1 )