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Providing high reliability in a minimum redundancy archival storage system (2006)
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| Venue: | Proc.14 th International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems |
| Citations: | 12 - 3 self |
BibTeX
@INPROCEEDINGS{Bhagwat06providinghigh,
author = {Deepavali Bhagwat and Kristal Pollack and Darrell D. E. Long and Thomas Schwarz and Ethan L. Miller and Jehan-françois Pâris},
title = {Providing high reliability in a minimum redundancy archival storage system},
booktitle = {Proc.14 th International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems},
year = {2006}
}
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Abstract
Inter-file compression techniques store files as sets of references to data objects or chunks that can be shared among many files. While these techniques can achieve much better compression ratios than conventional intra-file compression methods such as Lempel-Ziv compression, they also reduce the reliability of the storage system because the loss of a few critical chunks can lead to the loss of many files. We show how to eliminate this problem by choosing for each chunk a replication level that is a function of the amount of data that would be lost if that chunk were lost. Experiments using actual archival data show that our technique can achieve significantly higher robustness than a conventional approach combining data mirroring and intra-file compression while requiring about half the storage space. 1.
Keyphrases
high reliability minimum redundancy archival storage system many file storage system intra-file compression storage space replication level conventional approach conventional intra-file compression method critical chunk inter-file compression technique actual archival data compression ratio data mirroring lempel-ziv compression data object
