期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2008
卷号：8
期号：6
页码：22-32
出版社：International Journal of Computer Science and Network Security
摘要：The emergent of scientific applications which produce a huge volume of data files to be managed and shared require special attention. In large-scale grid, data replication provides a suitable solution for managing data files where data reliability and data availability are enhanced. But data replication causes further problems: 1. How to balance the number of replicas in grid sites. Indeed, increasing number of replicas lead to increase data availability and reliability, however the storage space will be increased as well. Therefore, a good balancing of number of replicas is required. 2. Replica placement problem. Placing the new replicas in the appropriate location site can promote reducing the network bandwidth consumption and reduce the turnaround job time. Replication strategy, replica placement policy, and replica selection are all embodied into our proposed system in order to: reduce job turnaround time, reduce storage cost, and reduce network bandwidth consumption. The simulation results show that our system outperforms other similar systems performance around 15%.
关键词：Data Grid; Data Replication; Replication Strategy; Replica Placement Policy
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