Dynamic Data Replication based on Local Optimization Principle in Data Grid

Authors:
Yulai Yuan;Yongwei Wu;Guangwen Yang;Feng Yu
Affiliations:
Tsinghua University Beijing 100084, China;Tsinghua University Beijing 100084, China;Tsinghua University Beijing 100084, China;OASIS, INRIA, 2004 Rt, Des Lucioles BP 93 F-06902, Sophia Antipolis Cedex, France
Venue:
GCC '07 Proceedings of the Sixth International Conference on Grid and Cooperative Computing
Year:
2007

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Abstract

Efficient data access is one way of improving the performance of the Data Grid. In order to speed up the data access and reduce bandwidth consumption, Data Grid replicates essential data in multiple locations. This paper studies data replication strategy in Data Grid, taking into account two important issues which bound the replication: storage capability of different nodes and the bandwidth between these nodes. We propose a new dynamic replication strategy based on the principle of local optimization. The Data Grid can achieve the global data access optimization through the interaction of the local optimization in the local optimization areas.