分布式存储系统的数据冗余策略

发布时间：2018-04-17 19:39

本文选题：网络存储 + 数据冗余　；参考：《武汉大学学报(工学版)》2015年02期

【摘要】：针对分布式存储系统的数据可用性问题展开了深入的研究,提出了一种支持纠删码的冗余倍数估计算法,根据数据统计特征获取单个数据块最优冗余方案;并基于该算法模型设计了一种适用于分布式存储系统的数据冗余策略,旨在消耗最小的存储开销获得最优的数据可用性.在实现该数据冗余策略的过程中,为了优化理论算法模型的工程可行性,提出了基于采样计算中间经验参数的方法,有效地利用目标存储数据的统计特征降低算法的计算复杂度.仿真实验验证了这种数据冗余策略的可行性和有效性.
[Abstract]:In this paper, the data availability of distributed storage system is studied deeply, and a redundancy multiple estimation algorithm supporting erasure codes is proposed, which can obtain the optimal redundancy scheme of a single data block according to the statistical characteristics of the data.Based on the algorithm model, a data redundancy strategy for distributed storage systems is designed, which aims to achieve optimal data availability with minimal storage overhead.In order to optimize the engineering feasibility of the theoretical algorithm model, a method based on sampling to calculate the intermediate empirical parameters is proposed in order to optimize the engineering feasibility of the data redundancy strategy.The computational complexity of the algorithm is reduced by using the statistical features of the data stored by the target effectively.Simulation results demonstrate the feasibility and effectiveness of the data redundancy strategy.
【作者单位】：武汉大学电子信息学院;
【分类号】：TP333

【相似文献】