云计算环境下异构数据节点冗余存储模式的优化  

OPTIMISATION OF HETEROGENEOUS DATA NODE REDUNDANCY STORAGE MODE IN CLOUD COMPUTING ENVIRONMENT

作　　者：刘波[1] 刘青凤[2] 

机构地区：[1]安阳工学院飞行学院,河南安阳455000 [2]安阳工学院北校区计算机系,河南安阳455000

出　　处：《计算机应用与软件》2015年第1期30-33,共4页Computer Applications and Software

基　　金：国家科技重大专项课题(2012zx04011012)

摘　　要：现有的纠删码假设存储节点的可用性是相同的,而现实的应用系统往往由可用性不同的异构存储节点组成,这使得系统的实际可用性与设计的最优值之间存在一定的差异。为了减小系统的实际可用性与设计最优值的差异,将存储节点看作是异构的,提出一种异构存储节点下的可用性分析框架,以及优化的纠删码部署方法。实验表明,所提出的纠删码部署方法的可用性与系统实际可用性的差异小,性能明显优于现有的相关工作。Existing erasure codes presume that the availabilities of storage nodes are the same, but actual application systems usually consist of heterogeneous storage nodes with different availabilities, this causes certain difference existed between the real availability of the system and the optimal designed value. In order to reduce this difference, we consider the storage nodes to be heterogeneous, and propose an availability analysing framework based on the consideration, as well as an optimal erasure codes deployment method. Experiments show that the proposed erasure codes deployment method has small differences between its availability and the actual system availability, the performance is clearly superior to current related works.

关 键 词：云计算 数据存储 纠删码 优化 算法 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]