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arXiv · 2201.07503

Dual-Code Bounds on Multiple Concurrent (Local) Data Recovery

Gianira N. Alfarano·Alberto Ravagnani·Emina Soljanin
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Abstract

We are concerned with linear redundancy storage schemes regarding their ability to provide concurrent (local) recovery of multiple data objects. This paper initiates a study of such systems within the classical coding theory. We show how we can use the structural properties of the generator matrix defining the scheme to obtain a bounding polytope for the set of data access rates the system can support. We derive two dual distance outer bounds, which are sharp for some large classes of matrix families.

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Gianira N. Alfarano, Alberto Ravagnani, Emina Soljanin. 2022-01-19. Dual-Code Bounds on Multiple Concurrent (Local) Data Recovery. https://arxiv.org/abs/2201.07503

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