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Proceedings Paper

Architecture for a large, high-density, fast-access data repository
Author(s): Gerard A. Schlak
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Paper Abstract

The ability to access very large data sets in seconds rather than hours or days is key to an efficient analysis procedure. We have developed a high performance robotic storage and retrieval system plus an innovative data management technique which provides this capability and is now in operation at user sites. Our EMASSTM (E-systems modular automated storage system) achieves this high performance with a combination of state-of-the-art technology. helical-scan digital recorders, each having a sustained transfer rate of 15 megabytes/second and a burst transfer rate of 20 megabytes/second are used to store data, and many recorders can be accessed concurrently to achieve the desired transfer rate. Commercially available, out-of-box D2 high density magnetic tape is used for archiving data, and this 19 mm tape is available in three cassette sizes having capacities of 25, 75, or 165 gigabytes, respectively. Cassettes are stored in modular robotic systems whose capacities can be expanded from a few terabytes to thousands of terabytes. EMASS software controls all aspects of data management including commanding the robots to move cassettes between their storage locations and the recorders. Performance is matched to each user's needs by tailoring the number of recorders, the size and configuration of the robotic archive, and the number of robots for the user's environment.

Paper Details

Date Published: 20 January 1993
PDF: 10 pages
Proc. SPIE 1785, Enabling Technologies for High-Bandwidth Applications, (20 January 1993); doi: 10.1117/12.139274
Show Author Affiliations
Gerard A. Schlak, E-Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 1785:
Enabling Technologies for High-Bandwidth Applications
Jacek Maitan, Editor(s)

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