Affiliations: Computer Science Department, Faculty of Sciences of Tunis, Tunis El Manar University, University Campus, Tunis, Tunisia
Correspondence:
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Corresponding author: T. Hamrouni, Computer Science Department, Faculty of Sciences of Tunis, Tunis El Manar University, University Campus, Tunis, Tunisia. E-mail:tarek.hamrouni@fst.rnu.tn
Abstract: The recent years have witnessed an explosive growth
of data in many fields like scientific experiments and engineering
applications. In this context, data grids have emerged as a useful
technology for managing large amounts of distributed data. Data
replication in data grids, which consists in creating multiple copies (aka replicas) of the same file in several storage resources, is an efficient technique that aims to
improve response time, reduce the bandwidth consumption and
maintain reliability. In this regard, where to place replicas over grid sites has a great impact on the overall grid performance and must be done carefully given some chosen criteria to be satisfied. The present work focuses in details on the utility of placement strategies on the grid performance with respect to several criteria and target goals. We also highlight a synergy between the placement techniques used in data grids and those relied on in other domains, like marketing and electricity.
Keywords: Data grid, placement strategy, evaluation, performance, impact
