On Minimizing Data-read and Download for Storage-Node RecoveryReport as inadecuate



 On Minimizing Data-read and Download for Storage-Node Recovery


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We consider the problem of efficient recovery of the data stored in any individual node of a distributed storage system, from the rest of the nodes. Applications include handling failures and degraded reads. We measure efficiency in terms of the amount of data-read and the download required. To minimize the download, we focus on the minimum bandwidth setting of the regenerating codes model for distributed storage. Under this model, the system has a total of n nodes, and the data stored in any node must be efficiently recoverable from any d of the other n-1 nodes. Lower bounds on the two metrics under this model were derived previously; it has also been shown that these bounds are achievable for the amount of data-read and download when d=n-1, and for the amount of download alone when d



Author: Nihar B. Shah

Source: https://archive.org/







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