Performance Analysis of Disk Arrays under Failure.
Richard R. Muntz, John C. S. Lui:
Performance Analysis of Disk Arrays under Failure.
VLDB 1990: 162-173@inproceedings{DBLP:conf/vldb/MuntzL90,
author = {Richard R. Muntz and
John C. S. Lui},
editor = {Dennis McLeod and
Ron Sacks-Davis and
Hans-J{\"o}rg Schek},
title = {Performance Analysis of Disk Arrays under Failure},
booktitle = {16th International Conference on Very Large Data Bases, August
13-16, 1990, Brisbane, Queensland, Australia, Proceedings},
publisher = {Morgan Kaufmann},
year = {1990},
isbn = {1-55860-149-X},
pages = {162-173},
ee = {db/conf/vldb/MuntzL90.html},
crossref = {DBLP:conf/vldb/90},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
Abstract
Disk arrays (RAID) have been proposed as a possible approach to solving the emerging I/O bottleneck problem.
The performance of a RAID system when all disks are operational and the MTTFsys (mean time to system failure) have been well studied.
However, the performance of disk arrays in the presence of failed disks has not received much attention.
The same techniques that provide the storage efficient redundancy of a RAID system can also result in a significant performance hit when a single disk fails.
This is of importance since single disk failures are expected to be relativelyfrequent in a system with a large number of disks.
In this paper we propose a new variation of the RAID organization that has significant advantages in both reducing the magnitude of the performance degradation when there is a single failure and can also reduce the MTTFsys.
We also discuss several strategies that can be implemented to speed the rebuild of the failed disk and thus increase the MTTFsys.
The efficacy of these strategies is shown to require the improved properties of the new RAID organization.
An analysis is carried out to quantify the tradeoffs.
Copyright © 1990 by the VLDB Endowment.
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Printed Edition
Dennis McLeod, Ron Sacks-Davis, Hans-Jörg Schek (Eds.):
16th International Conference on Very Large Data Bases, August 13-16, 1990, Brisbane, Queensland, Australia, Proceedings.
Morgan Kaufmann 1990, ISBN 1-55860-149-X
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Copyright © Tue Mar 16 02:22:00 2010
by Michael Ley (ley@uni-trier.de)
