A survey on network codes for distributed storage

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Distributed storage systems often introduce redundancy to increase reliability. When coding is used, the repair problem arises: if a node storing encoded information fails, in order to maintain the same level of reliability we need to create encoded information at a new node. This amounts to a partial recovery of the code, whereas conventional erasure coding focuses on the complete recovery of the information from a subset of encoded packets. The consideration of the repair network traffic gives rise to new design challenges. Recently, network coding techniques have been instrumental in addressing these challenges, establishing that maintenance bandwidth can be reduced by orders of magnitude compared to standard erasure codes. This paper provides an overview of the research results on this topic.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2011-03
Language
English
Article Type
Article
Citation

PROCEEDINGS OF THE IEEE, v.99, no.3, pp.476 - 489

ISSN
0018-9219
DOI
10.1109/JPROC.2010.2096170
URI
http://hdl.handle.net/10203/102252
Appears in Collection
EE-Journal Papers(저널논문)
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