Update efficient codes for distributed storage

  title={Update efficient codes for distributed storage},
  author={Ankit Singh Rawat and Sriram Vishwanath and Abhishek Bhowmick and Emina Soljanin},
  journal={2011 IEEE International Symposium on Information Theory Proceedings},
This paper determines mechanisms for distributed storage that are simultaneously repair and update efficient. Repair efficiency demands that minimum information be downloaded from surviving nodes to reconstruct failed storage nodes. Update efficiency desires that changes in the original data require minimal updates at the storage nodes. These two requirements can be seen as counteracting one another, as the latter imposes a sparsity constraint on the encoding process that is not desirable for… CONTINUE READING
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