Carnegie Mellon University
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Byzantine-tolerant Erasure-coded Storage (CMU-CS-03-187)

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posted on 2003-09-01, 00:00 authored by Garth R. Goodson, Jay J. Wylie, Gregory R. Ganger, Michael K. Reiter
This paper describes a decentralized consistency protocol for survivable storage that exploits data versioning within storage-nodes. Versioning enables the protocol to efficiently provide linearizability and wait-freedom of read and write operations to erasure-coded data in asynchronous environments with Byzantine failures of clients and servers. Exploiting versioning storage-nodes, the protocol shifts most work to clients. Reads occur in a single round-trip unless clients observe concurrency or write failures. Measurements of a storage system using this protocol show that the protocol scales well with the number of failures tolerated, and that it outperforms a highly-tuned instance of Byzantine-tolerant state machine replication.

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2003-09-01

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