Boosting Degraded Reads in Heterogeneous Erasure-Coded Storage Systems

  title={Boosting Degraded Reads in Heterogeneous Erasure-Coded Storage Systems},
  author={Yunfeng Zhu and Jian Lin and Patrick P. C. Lee and Yinlong Xu},
  journal={IEEE Transactions on Computers},
Distributed storage systems provide large-scale data storage services, yet they are confronted with frequent node failures. To ensure data availability, a storage system often introduces data redundancy via replication or erasure coding. As erasure coding incurs significantly less redundancy overhead than replication under the same fault tolerance, it has been increasingly adopted in large-scale storage systems. In erasure-coded storage systems, degraded reads to temporarily unavailable data… CONTINUE READING