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direct access storage device

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Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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direct access storage device  
n.   Abbr. DASD
A type of storage device, such as a magnetic disk, in which bits of data are stored at precise locations, enabling the computer to retrieve information directly without having to scan a series of records.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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