云存储智能多数据副本放置机制精选.pdf

nISSN 1673-9418 CODEN JKYTA8 E-mail: fcst@ Journal of Frontiers of Computer Science and Technology 1673-9418/2014/08(00)-0000-00 Tel: +86-10 doi: 10.3778/j.issn.1673-9418.1402027 云存储智能多数据副本放置机制* 张 榜，王兴伟，黄 敏 东北大学 信息科学与工程学院，沈阳 110819 * Intelligent Multiple Data Replica Placement Scheme for Cloud Storage ZHANG Bang+, WANG Xingwei, HUANG Min College of Information Science and Engineering, Northeastern University, Shenyang 110819, China +Corresponding author: E-mail: cucumberbb@163.com ZHANG Bang, WANG Xingwei, HUANG Min. Intelligent multiple data replica placement scheme for cloud storage. Journal of Frontiers of Computer Science and Technology, 2014, 8(0): 1-000. Abstract: The data replica management scheme is a critical component of cloud storage system. In order to improve its scalability and reliability at the same time shorten user access time, the multiple data replica scheme should be adopted and the proper placement for each replica should be determined. Thus, this paper proposes an intelligent multiple data replica placement scheme for cloud storage. This scheme is based on p- center model with minimizing user access cost as its optimization objective. It uses genetic algorithm (GA) to find the optimal data replica placement solution and uses biogeography-based optimization (BBO) algorithm to optimally assign user access request to the specific data replica. The proposed scheme has been implemented based on CloudSim and performance evaluation has been done. The simulation results show that it is both feasible and effective. Key words: cloud storage; multiple d