@inproceedings{a49140eb04ed4c9e99e6ab9a14676df6,
title = "ESet: Placing data towards efficient recovery for large-scale erasure-coded storage systems",
abstract = "Erasure coding has been extensively deployed in distributed storage systems to ensure high reliability and low storage overhead. However, erasure coding requires much more disk I/O to recover a damaged data block than replication does, resulting in very long data recovery time. Data placement algorithm can be tailored to speed up data recovery process by exploiting I/O parallelism. However, existing algorithms that obtain good I/O parallelism for replication can not directly work with erasure-coded storage systems; and other algorithms for both replication based and erasure-coded storage systems overlook the importance of recovery I/O parallelism, which may jeopardize the service quality and reliability of these systems. In this paper, we present a data placement strategy named ESet which brings recovery efficiency for each host in a distributed storage system. We define a configurable parameter named overlapping factor for system administrator to easily achieve desirable recovery I/O parallelism. Our simulation results show that ESet can significantly improve the data recovery performance without violating the reliability requirement by distributing data and code blocks across different failure domains.",
author = "Chengjian Liu and Xiaowen CHU and Hai Liu and LEUNG, {Yiu Wing}",
note = "Publisher Copyright: {\textcopyright} 2016 IEEE. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.; 25th International Conference on Computer Communications and Networks, ICCCN 2016 ; Conference date: 01-08-2016 Through 04-08-2016",
year = "2016",
month = sep,
day = "14",
doi = "10.1109/ICCCN.2016.7568521",
language = "English",
series = "2016 25th International Conference on Computer Communications and Networks, ICCCN 2016",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2016 25th International Conference on Computer Communications and Networks, ICCCN 2016",
address = "United States",
}