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Fifth IEEE International Symposium on Network Computing and Applications (NCA'06)
Comparison of Redundancy Schemes for Distributed Storage Systems
Cambridge, Massachusetts
July 24-July 26
ISBN: 0-7695-2640-3
Peter Sobe, University of Lubeck, Germany
Kathrin Peter, Konrad-Zuse-Zentrum fur Informationstechnik, Germany
Reliable distributed data storage systems have to employ redundancy codes to tolerate the loss of storages. Many appropriate codes and algorithms can be found in the literature, but efficient schemes for tolerating several storage failures and their embedding in a distributed system are still research issues. In this paper, a variety of redundancy schemes are compared that got implemented in a distributed storage system. All schemes are based on parity and Reed/Solomon and are integrated in the storage system NetRAID. This system allows to configure several userspecified layouts. A performance and reliability analysis of several data and redundancy layouts is presented that combines analytical and experimental results. In a detail, we present performance results for an optimized Reed/Solomon implementation and give an outline for speeding up encoding and recovery by reconfigurable hardware employed in the distributed storage system.
Citation:
Peter Sobe, Kathrin Peter, "Comparison of Redundancy Schemes for Distributed Storage Systems," nca, pp.196-203, Fifth IEEE International Symposium on Network Computing and Applications (NCA'06), 2006
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