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1 Pangaea: A File Service for Planetary-Scale Distributed Applications Yasushi Saito, Christos Karamanolis, Magnus Karlsson, Mallik Mahalingam HP Laboratories.

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Presentation on theme: "1 Pangaea: A File Service for Planetary-Scale Distributed Applications Yasushi Saito, Christos Karamanolis, Magnus Karlsson, Mallik Mahalingam HP Laboratories."— Presentation transcript:

1 1 Pangaea: A File Service for Planetary-Scale Distributed Applications Yasushi Saito, Christos Karamanolis, Magnus Karlsson, Mallik Mahalingam HP Laboratories

2 2 Pangaea: A Wide-area File Service Goals: wide area performance & availability with local-area feel nodes, files. Support frequently written files. Decentralization. Applications: Wide-area collaboration, dist. application services. Approaches: Aggressive replication. Proactive update propagation. QoS-conscious data placement.

3 3 Overview /Joe/movie.mpg /Joe/mail.txt /Joe Root –Many files, replicated on 1000 nodes. –Each replica has a limited view of the replica set –A connected graph maintained for each object

4 4 Research Issues Cheap but reliable replica addition/removal Automatic graph shaping When and where to create and remove replicas? /Joe/movie.mpg /Joe/mail.txt /Joe Root Contact:


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