文章基本信息

标题：DATA REPLICATION USING MODIFIED D2RS IN CLOUD COMPUTING FOR PERFORMANCE IMPROVEMENT
本地全文：下载
作者：S.KIRUBAKARAN ; Dr.S. VALARMATHY ; C.KAMALANATHAN 等
期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：58
期号：2
出版社：Journal of Theoretical and Applied
摘要：In cloud computing environments failures are normal rather exceptional. To advance the system availability, the frequently used data should get replicated to multiple locations to make the users to access from the nearby site. To decide a reasonable number and right location of replicas is a challenging task in cloud computing. Here, we recommend a Modified Dynamic Data Replication Strategy (MDDRS) to decide a reasonable number and right location of replicas and we compare both the modified dynamic data replication strategy and Dynamic Data Replication Strategy (DDRS). The DDRS has three different stages which are the identification of data file to replicate, number of replicas to be created and placing new replicas. We modify the popularity degree in the first stage of normal dynamic data replication strategy and the other two stages are similar to the normal dynamic data replication strategy. In addition we incorporate the synchronous and asynchronous updation of replica data file when we update the main data center.
关键词：Cloud Computing; Data Replication; Popularity Degree