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On Fairness, Optimizing Replica Selection in Data Grids

机译：关于公平，优化数据网格中的副本选择

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摘要

The emergence of scientific applications that produce huge volume of data files requires special attention, and leads to the problem of how to manage and share such data files in wide area properly. In large-scale Grid, data replication provides a suitable solution for managing data files where data reliability and data availability are enhanced. Replica selection is one of the major functions of data replication that decides which replica location is the best for Grid users. In this paper, we address the replica selection problem in a Grid environment where the users are competing for the limited data resource. Thus, our aim is to establish fairness among the users in the selection decisions. Since the criteria that play a role in the selection process conflict with each other and produce heterogeneous values, the Analytical Hierarchy Process is used to solve this optimization problem. The proposed system validity and performance are evaluated by using a simulation. The simulation results were produced and discussed in this paper.
机译：产生大量数据文件的科学应用程序的出现需要特别关注，并导致如何在广域中正确管理和共享此类数据文件的问题。在大型Grid中，数据复制为管理数据文件提供了合适的解决方案，从而增强了数据可靠性和数据可用性。副本选择是数据复制的主要功能之一，它决定哪个副本位置最适合Grid用户。在本文中，我们解决了网格环境中用户选择竞争有限数据资源的副本选择问题。因此，我们的目标是在选择决定中建立用户之间的公平性。由于在选择过程中起作用的标准相互冲突并产生异类值，因此使用层次分析法来解决此优化问题。通过仿真评估了所提出的系统有效性和性能。本文给出了仿真结果并进行了讨论。

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