Coda: A Highly Available File System for a Distributed Workstation Environment

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Coda: A Highly Available File System for a Distributed Workstation Environment (1990)

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by Mahadev Satyanarayanan , James J. Kistler , Puneet Kumar , Maria E. Okasaki , Ellen H. Siegel , David C. Steere

Venue:	IN IEEE TRANSACTIONS ON COMPUTERS
Citations:	525 - 45 self

BibTeX

@ARTICLE{Satyanarayanan90coda:a,
    author = {Mahadev Satyanarayanan and James J. Kistler and Puneet Kumar and Maria E. Okasaki and Ellen H. Siegel and David C. Steere},
    title = {Coda: A Highly Available File System for a Distributed Workstation Environment},
    journal = {IN IEEE TRANSACTIONS ON COMPUTERS},
    year = {1990},
    volume = {39},
    number = {4},
    pages = {447--459}
}

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Abstract

Coda is a file system for a large-scale distributed computing environment composed of Unix workstations. It provides resiliency to server and network failures through the use of two distinct but complementary mechanisms. One mechanism, server replication,stores copies of a file at multiple servers. The other mechanism, disconnected operation, is a mode of execution in which a caching site temporarily assumes the role of a replication site. Disconnected operation is particularly useful for supporting portable workstations. The design of Coda optimizes for availability and performance, and strives to provide the highest degree of consistency attainable in the light of these objectives. Measurements from a prototype show that the performance cost of providing high availability in Coda is reasonable.

Keyphrases

highly available file system distributed workstation environment disconnected operation server replication file system performance cost prototype show abstract coda index term andrew network failure portable workstation replication site store copy caching site portable computer multiple server unix workstation high availability complementary mechanism

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