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AICCSA
2008
IEEE

A dynamic weighted data replication strategy in data grids

9 years 1 months ago
A dynamic weighted data replication strategy in data grids
Data grids deal with a huge amount of data regularly. It is a fundamental challenge to ensure efficient accesses to such widely distributed data sets. Creating replicas to a suitable site by data replication strategy can increase the system performance. It shortens the data access time and reduces bandwidth consumption. In this paper, a dynamic data replication mechanism is proposed, which is called Latest Access Largest Weight (LALW). LALW selects a popular file for replication and calculates a suitable number of copies and grid sites for replication. By setting a different weight for each data access record, the importance of each record is differentiated. The data access records in the nearer past have higher weight. It indicates that these records have higher value of references. In other words, the data access records in the long past have lower reference values. A Grid simulator OptorSim is used to evaluate the performance of this dynamic replication strategy. The simulation res...
Ruay-Shiung Chang, Hui-Ping Chang, Yun-Ting Wang
Added 12 Oct 2010
Updated 12 Oct 2010
Type Conference
Year 2008
Where AICCSA
Authors Ruay-Shiung Chang, Hui-Ping Chang, Yun-Ting Wang
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