A Cached WORM File System

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A Cached WORM File System (1991)

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by Sean Quinlan

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33 - 2 self

BibTeX

@MISC{Quinlan91acached,
    author = {Sean Quinlan},
    title = {A Cached WORM File System},
    year = {1991}
}

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Abstract

This paper describes a general-purpose file system that uses a write-once-read-many (WORM) optical disk accessed via a magnetic disk cache. The cache enables blocks to be modified a number of times before they are written to the WORM and increases performance. Snapshots of the file system can be made at any time without limiting the users' access to files. These snapshots reside entirely on the WORM, are accessible to the user via a second read-only file system, do not contain multiple copies of unchanged data, and can be used to rebuild the file system in the event that the disk cache is destroyed

Keyphrases

cached worm file system file system magnetic disk cache optical disk disk cache multiple copy general-purpose file system unchanged data second read-only file system

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