Adaptive liveness management for robust and efficient...

Details Adaptive liveness management for robust and efficient... Adaptive liveness management for robust and efficient...

2011-02-08

2011-02-08

Nguyen, Dustin (Department: 2454)

Electrical computers and digital processing systems: multicomput

Computer network managing

C711S100000

Reexamination Certificate

active

07886034

ABSTRACT:
A peer-to-peer storage manager measures availability (liveness) of the various nodes in a peer-to-peer storage pool, and adjusts the storage of data within the pool to meet performance expectations based on this liveness information. Based on node liveness statistics, the peer-to-peer storage manager fine tunes storage up or down to efficiently allocate storage while maintaining service level objectives for retrieval time probabilities. Responsive to node liveness information, the peer-to-peer storage manager can dynamically adjust redundancy and/or determine which nodes on which to store data. The peer-to-peer storage manager can execute these storage modifications using rateless erasure codes that allow highly robust storage with only weakly synchronized directory update protocols.

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