FRINK Linked Data Fragments server

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• W3008209792 abstract "One of the primary objectives of a distributed storage system is to reliably store a large amount $dsize$ of source data for a long duration using a large number $N$ of unreliable storage nodes, each with capacity $nsize$. The storage overhead $beta$ is the fraction of system capacity available beyond $dsize$, i.e., $beta = 1- frac{dsize}{N cdot nsize}$. Storage nodes fail randomly over time and are replaced with initially empty nodes, and thus data is erased from the system at an average rate $erate = lambda cdot N cdot nsize$, where $1/lambda$ is the average lifetime of a node before failure. To maintain recoverability of the source data, a repairer continually reads data over a network from nodes at some average rate $rrate$, and generates and writes data to nodes based on the read data. The main result is that, for any repairer, if the source data is recoverable at each point in time then it must be the case that $rrate ge frac{erate}{2 cdot beta}$ asymptotically as $N$ goes to infinity and beta goes to zero. This inequality provides a fundamental lower bound on the average rate that any repairer needs to read data from the system in order to maintain recoverability of the source data." @default.
• W3008209792 created "2020-03-06" @default.
• W3008209792 creator A5079654174 @default.
• W3008209792 date "2020-02-18" @default.
• W3008209792 modified "2023-09-27" @default.
• W3008209792 title "Repair rate lower bounds for distributed storage" @default.
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