Paper Info
Title
Progressive Decoding for Data Availability and Reliability in Distributed Networked Storage
Abstract
To harness the ever growing capacity and decreasing cost of storage, providing an abstraction of dependable storage in the presence of crash-stop and Byzantine failures is compulsory. We propose a decentralized Reed Solomon coding mechanism with minimum communication overhead. Using a progressive data retrieval scheme, a data collector contacts only the necessary number of storage nodes needed to guarantee data integrity. The scheme gracefully adapts the cost of successful data retrieval to the number of storage node failures. Moreover, by leveraging the Welch-Berlekamp algorithm, it avoids unnecessary computations. Compared to the state-of-the-art decoding scheme, the implementation and evaluation results show that our progressive data retrieval scheme has up to 35 times better computation performance for low Byzantine node rates. Additionally, the communication cost in data retrieval is derived analytically and corroborated by Monte-Carlo simulation results. Our implementation is flexible in that the level of redundancy it provides is independent of the number of data generating nodes, a requirement for distributed storage systems
Year
Venue
Keywords
2010
Clinical Orthopaedics and Related Research
reed solomon code,data integrity,byzantine failures,monte carlo simulation,data retrieval,cluster computing
Field
DocType
Volume
Computer science,Data retrieval,Distributed data store,Byzantine fault tolerance,Coding (social sciences),Reed–Solomon error correction,Real-time computing,Redundancy (engineering),Data integrity,Decoding methods,Distributed computing
Journal
abs/1011.4
Citations 
PageRank 
References 
0
0.34
9
Authors
3
Name
Order
Citations
PageRank
Yunghsiang S. Han12472159.76
Soji Omiwade251.34
Rong Zheng3245.58