| Summary: | 碩士 === 東海大學 === 資訊工程與科學系碩士在職專班 === 95 === In recent years, grid technology, which is frequently used to solve the scientific problem, has ripened gradually. A large number of storage resources and computational power are combined to form a data grid network to deal with massive data of scientific experiments. Data replication [33] generates huge data which are distributed in wide-area for researches around the globe. The files of grid environments can be modified by grid users might bring a critical problem of maintaining data consistency among the several replicas distributed in different machines. For that reason how to maintain the consistency of those files is a great challenge. In this thesis, we propose a One-way Replica Consistency model in data grid environments, which is a positive approach for consistency maintenance issue. By so doing, we anticipate to strike a balance between improving data access performance and replica consistency in data grids. Trying to find more efficient ways of utilizing storage space is an important point in this thesis.
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