In today's Grids, flies are usually managed by Grid data management systems that are superimposed on existing file and storage systems. In this paper, we analyze this predominant approach and argue that object-based file systems can be an alternative when adapted to the characteristics of a Grid environment. We describe how we are solving the challenge of extending the object-based storage architecture for the Grid in XtreemFS, an object-based file system for federated infrastructures. Copyright © 2008 John Wiley & Sons, Ltd.
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