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Role of the DASD storage control in an Enterprise Systems Connection environment

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1 Author(s)
Grossman, C.P. ; IBM Storage Systems Products Division, 9000 S. Rita Road, Tucson, Arizona 85706, USA

This paper compares the Enterprise Systems Connection Architecture™ (ESCON™), with its use of fiber optic cables, to the parallel channel architecture introduced with System/360™. It also describes many of the reasons for the introduction of ESCON. The ESCON implementation for the IBM 3990 Storage Control is described in some detail, including a description of nonsynchronous operation. The paper concludes with a discussion of some of the benefits of ESCON for 3990 installation, performance considerations, and migration considerations.

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:31 ,  Issue: 1 )