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Erasurecoding

High Availability in DHTs: Erasure Coding vs. Replication

... is immutable and therefore asin-gleavailablecopy is sufficient to retrieve the correct object), we compute the follo wing values for. =P (objectois unavailable) =P (allkreplicasofo are unavailable) =P (one replica is unavailable) k = (1 a) k which upon solving fork yields k= log log(1 a) (1) 2.2 ErasureCoding ...

APPLICATION LAYER ASPECTS OF NETWORK CODING: REPORT ON STATE ...

The network coding inspired methods basically outperform erasure coding in terms of downloading time for an object availability target, as well as in repair bandwidth needs. 2.1 ErasureCoding Distributed Storage Systems In a distributed storage system employinga (N,M) erasure code[10], each ...