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| 分布式存储系统最小带宽再生码研究 | |
| 引用本文： | 王禹,赵跃龙,侯昉.分布式存储系统最小带宽再生码研究[J].小型微型计算机系统,2012,33(8):1710-1714. |
| 作者姓名： | 王禹 赵跃龙 侯昉 |
| 作者单位： | 1. 广东技术师范学院教育技术系,广州510665;华南理工大学计算机科学与工程学院,广州510640 2. 华南理工大学计算机科学与工程学院,广州,510640 3. 华南理工大学计算机科学与工程学院,广州510640;广东金融学院计算机系,广州510520 |
| 基金项目： | 国家自然科学基金项目，博士点基金项目，广东省自然科学基金项目，广东优秀青年创新人才培育项目 |
| 摘 要： | 分布式存储系统常常使用纠删码冗余技术提高系统可靠性.为保证一定的冗余度,系统必须具有自修复能力再生失效数据.再生码是纠删码的一种改进形式,最大特点在于无需下载整个数据文件就能恢复单个节点数据,从而有效减少数据修复时的网络带宽.相关文献证明再生码数据修复时存在极值点—最小带宽再生点(MBR),由此提出最小带宽再生码MBRC.文中从数据分布、失效数据修复和数据重构三个方面描述了实现的原理,并通过构建数据矩阵和修复矩阵实现MBRC再生码.利用实例详细给出了再生码的实现过程,并理论证明正确性,最后仿真实验验证了MBRC的有效性. |
| 关 键 词： | 分布式 存储系统 再生码 数据修复 |
Minimum Bandwidth Regeneration Code of Distributed Storage System |
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| WANG Yu , ZHAO Yue-long , HOU Fang.Minimum Bandwidth Regeneration Code of Distributed Storage System[J].Mini-micro Systems,2012,33(8):1710-1714. | |
| Authors: | WANG Yu ZHAO Yue-long HOU Fang |
| Affiliation: | Fang2,3 1(Guangdong Polytechnic Normal University,Guangzhou,Guangzhou 510665,China) 2(School of Computer Science and Engineering,South China University of Technology,Guangzhou 510006,China) 3(Department of Computer,Guangdong University of Finance,Guangzhou 510520,China) |
| Abstract: | Distributed storage systems often use redundancy technology to improve system′s reliability,such as erasure codes.In order to ensure a certain redundancy degree,the system must have self-healing ability to regenerate failure data.Regeneration code is an improvement form of erasure codes,which has the feature that no needs to download the entire file to recover a single node data.Therefore,it can effectively reducing the network bandwidth when data recovery.Some literatures prove that there are extreme points when data repair for erasure code,which is the minimum bandwidth regeneration points(MBR).We raised the minimum bandwidth regeneration code(MBRC).In this paper the principle of MBRC is given in detail and the implementation process is described by examples.the final simulation experiments verify the effectiveness of the MBRC. |
| Keywords: | distributed system storage system regeneration code data repairing |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |