Performance Improvement of Parity Logging Scheme in RAID 5 by Eliminating Redundant Parity Image


The Transactions of the Korea Information Processing Society (1994 ~ 2000), Vol. 2, No. 4, pp. 543-553, Jul. 1995
10.3745/KIPSTE.1995.2.4.543,   PDF Download:

Abstract

While a RAID 5 disk arrays offer advantages of performance and reliability on wide variety of applications, they suffer from the performance degradation with write jobs. To reduce the effect of this problem, parity logging scheme was suggested. This scheme reduces disk busy time by transforming many small random accesses into large sequential accesses. This paper presents a new parity logging technique which prevents parity update image from redundant storing in the disk buffer and reduces parity maintenance overhead. A analytical model and several simulation results of our proposed scheme are presented.


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Cite this article
[IEEE Style]
G. J. Ho, L. M. Young, L. J. Ho, P. M. Soon, "Performance Improvement of Parity Logging Scheme in RAID 5 by Eliminating Redundant Parity Image," The Transactions of the Korea Information Processing Society (1994 ~ 2000), vol. 2, no. 4, pp. 543-553, 1995. DOI: 10.3745/KIPSTE.1995.2.4.543.

[ACM Style]
Ghil Jun Ho, Lee Min Young, Lee Jin Ho, and Park Myong Soon. 1995. Performance Improvement of Parity Logging Scheme in RAID 5 by Eliminating Redundant Parity Image. The Transactions of the Korea Information Processing Society (1994 ~ 2000), 2, 4, (1995), 543-553. DOI: 10.3745/KIPSTE.1995.2.4.543.