paper

Lower Bound on the Optimal Access Bandwidth of ( $K + 2, K, 2$ )-MDS Array Code with Degraded Read Friendly

arXiv:2102.02436

Abstract

Accessing the data in the failed disk (degraded read) with low latency is crucial for an erasure-coded storage system. In this work, the maximum distance separable (MDS) array code with the property of degraded-read friendly (DRF) is discussed. For the DRF MDS array code with 2 redundant nodes and the sub-packetization level of 2, the lower bound of its access bandwidth is derived.

22 pages, 1 figure

Lower Bound on the Optimal Access Bandwidth of (K+2,K,2)-MDS Array Code with Degraded Read Friendly

Abstract

Lower Bound on the Optimal Access Bandwidth of ( $K + 2, K, 2$ )-MDS Array Code with Degraded Read Friendly