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FAST '04 — Abstract

Pp. 227-238 of the Proceedings

Integrating Portable and Distributed Storage

Niraj Tolia, Carnegie Mellon University and Intel Research Pittsburgh; Jan Harkes, Carnegie Mellon University; Michael Kozuch, Intel Research Pittsburgh; M. Satyanarayanan, Carnegie Mellon University and Intel Research Pittsburgh


We describe a technique called lookaside caching that combines the strengths of distributed file systems and portable storage devices, while negating their weaknesses. In spite of its simplicity, this technique proves to be powerful and versatile. By unifying distributed storage and portable storage into a single abstraction, lookaside caching allows users to treat devices they carry as merely performance and availability assists for distant file servers. Careless use of portable storage has no catastrophic consequences. Experimental results show that significant performance improvements are possible even in the presence of stale data on the portable device.
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