Optimal Exact Repair Strategy for the Parity Nodes of the (k+2,k)(k+2,k) Zigzag Code

preprint2015arXivOpen access

Abstract

In this paper, we reinterprets the (k+2,k)(k+2,k) Zigzag code in coding matrix and then propose an optimal exact repair strategy for its parity nodes, whose repair disk I/O approaches a lower bound derived in this paper.

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