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CROSS-MBCR: Exact Minimum Bandwith Coordinated Regenerating Codes (1207.0854v1)
Published 3 Jul 2012 in cs.IT and math.IT
Abstract: We study the exact and optimal repair of multiple failures in codes for distributed storage. More particularly, we provide an explicit construction of exact minimum bandwidth coordinated regenerating codes (MBCR) for n=d+t,k,d >= k,t >= 1. Our construction differs from existing constructions by allowing both t>1 (i.e., repair of multiple failures) and d>k (i.e., contacting more than k devices during repair).