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Data storage systems are vital components of a computer complex. DASD storage control serves as a medium between the storage device and a computer system and has been largely transparent to users. The introduction of cache storage has increased users' awareness of storage control. In her paper, Grossman puts storage control as it relates to DASD and cache storage into historical perspective. She discusses the role of storage control in improved performance, function, and availability of DASD storage systems. The interaction of hardware. microcode, and software are reviewed in the evolution of storage control. These three critical functions have been performed in systems from the early days of computing up to the present time.

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: 2 )