Abstract
In data-oriented services in grids applications process data from multiple data sources among multiple administrative domains. Integration of heterogeneous data sources provides a unified data access with a unified virtual organization security mechanism. We propose design of a virtual organization file system (VOFS) which aggregates different heterogeneous file systems to provide data sharing between virtual organizations (VOs). We assume there is high dynamicity in VOs which means users and resources join and leave frequently. VOFS provides support for disconnected operations and replication and a policy based role based security mechanism. We have implemented a prototype based on our design as proof of concept using WebDAV.
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