一种基于3阶段实现的高性能云存储计算  

An Implementation for High Performance Cloud Storage Computation Based on Three Phases

作　　者：张皓 李敬伟 海本斋[2] ZHANG Hao;LI Jing-wei;HAI Ben-zhai(Department of Computer Science and Technology,Henan Institute of Technology,Xinxiang 453000,China;School of Computer and Information Engineering,Henan Normal University,Xinxiang 453007,China)

机构地区：[1]河南工学院计算机科学与技术系,河南新乡453000 [2]河南师范大学计算机与信息工程学院,河南新乡453007

出　　处：《火力与指挥控制》2019年第10期107-112,共6页Fire Control & Command Control

基　　金：河南省高等学校重点科研项目(16B520009);河南省科技厅科技攻关资助项目(162102310606)

摘　　要：提出了一种基于动态数据复制策略和放置算法的3阶段云存储计算。在第1阶段,计算出一个文件的PD,然后根据得到的PD,从中找到最需要访问的文件和需要复制的文件;在第2阶段,计算出需要复制文件的RF,以确定文件是否应当复制或创建副本;在第3阶段,计算出这些节点的AF,以找到创建副本的数量并把副本放置在适当位置的特定节点,从而向用户提供相同服务的不同副本来增加数据可用性;实验结果表明,提出的云存储计算策略不仅能够有效找到需要复制的文件及创建和放置副本,而且在SBER和执行时间性能方面都优于目前比较先进的技术。In order to improve the performance of the storage computing system in the cloud environment,a cloud storage computation based on three phases is proposed using a dynamic data replication strategy and placement algorithm. In the first phase, the popularity degree (PD)of a file is calculated, and then the most accessed file and the file need to be replicated is found using the resulting PD. In the second phase, the replica factor (RF)for the file to be replicated is calculated to determine whether the data file should be replicated or not and to create replicas. In the third phase, the availability factor (AF)for these nodes is calculated in order to find the number to create the replicas and the replicas are placed on the specific nodes in the appropriate position, so as to increase data availability by providing users with different replicas of the same service. The experimental results show that the proposed cloud storage computation strategy can not only effectively find the files to be replicated and create and place replicas, but also is better than the advanced technologies in terms of system byte effective rate bytes(SBER)and execution time performances.

关 键 词：云计算 复制因子 副本创建 系统可用性 执行时间 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]