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Record 10 of 224
Striped tertiary storage arrays
Author and Affiliation:
Drapeau, Ann L.(California Univ., Berkeley, CA, United States)
Abstract: Data stripping is a technique for increasing the throughput and reducing the response time of large access to a storage system. In striped magnetic or optical disk arrays, a single file is striped or interleaved across several disks; in a striped tape system, files are interleaved across tape cartridges. Because a striped file can be accessed by several disk drives or tape recorders in parallel, the sustained bandwidth to the file is greater than in non-striped systems, where access to the file are restricted to a single device. It is argued that applying striping to tertiary storage systems will provide needed performance and reliability benefits. The performance benefits of striping for applications using large tertiary storage systems is discussed. It will introduce commonly available tape drives and libraries, and discuss their performance limitations, especially focusing on the long latency of tape accesses. This section will also describe an event-driven tertiary storage array simulator that is being used to understand the best ways of configuring these storage arrays. The reliability problems of magnetic tape devices are discussed, and plans for modeling the overall reliability of striped tertiary storage arrays to identify the amount of error correction required are described. Finally, work being done by other members of the Sequoia group to address latency of accesses, optimizing tertiary storage arrays that perform mostly writes, and compression is discussed.
Publication Date: Jan 01, 1993
Document ID:
19930021275
(Acquired Dec 28, 1995)
Accession Number: 93N30464
Subject Category: DOCUMENTATION AND INFORMATION SCIENCE
Document Type: Conference Paper
Publication Information: NASA. Goddard Space Flight Center, Goddard Conference on Mass Storage Systems and Technologies, Volume 1,; p 203-213
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: California Univ.; Computer Science Dept.; Berkeley, CA, United States
Description: 11p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: DATA STORAGE; MAGNETIC DISKS; MAGNETIC TAPES; OPTICAL DISKS; RELIABILITY; CARTRIDGES; RECORDING INSTRUMENTS; TAPE RECORDERS
Imprint And Other Notes: In NASA. Goddard Space Flight Center, Goddard Conference on Mass Storage Systems and Technologies, Volume 1, p 203-213 (SEE N93-30449 11-82)
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