On the performance of D-redundant disk systems

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper we formally introduce the notion of a D-redundant disk system. The class of D-redundant systems includes the class of physically mirrored disks with D copies as well as the more recently introduced SR systems. We provide a very general lower bound on the average access time of any D-redundant system. Using the lower bound we show that that the SR systems of Yu et el. are within 15 percent of optimal performance. We also show how SR systems can be combined with anticipatory head movement policies (AHM) to provide systems which are optimal within 5 percent.

Original languageEnglish
Title of host publicationQEST 2005 - Proceedings Second International Conference on the Quantitative Evaluation of SysTems
Pages105-112
Number of pages8
DOIs
StatePublished - 1 Dec 2005
EventQEST 2005 - Second International Conference on the Quantitative Evaluation of SysTems - Torino, Italy
Duration: 19 Sep 200522 Sep 2005

Publication series

NameQEST 2005 - Proceedings Second International Conference on the Quantitative Evaluation of SysTems
Volume2005

Conference

ConferenceQEST 2005 - Second International Conference on the Quantitative Evaluation of SysTems
Country/TerritoryItaly
CityTorino
Period19/09/0522/09/05

ASJC Scopus subject areas

  • General Engineering

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