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Peer-to-peer distributed storage

  • US 8,051,205 B2
  • Filed: 10/13/2008
  • Issued: 11/01/2011
  • Est. Priority Date: 10/13/2008
  • Status: Expired due to Fees
First Claim
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1. In a peer-to-peer network, a method for peer-to-peer distributed file storage, the method comprising:

  • transmitting data file peer-storage information for a data file including a plurality of n segments for storage from a first peer node to a network-connected backup manager, the data file peer-storage information including a size of the data file and an identification of the first peer node;

    based on the data file peer-storage information, the network-connected backup manager creating a mapping plan that maps (n+x) erasure-coded segments including the plurality of n segments and x extra erasure-coded segments across a plurality of peer nodes forming a peer group, wherein the mapping plan cross-references each segment of the (n+x) erasure-coded segments to a corresponding peer node from the plurality of peer nodes;

    the network-connected backup manager transmitting the mapping plan to the first peer node; and

    the first peer node distributing the (n+x) erasure-coded segments to the plurality of peer nodes in the peer group in accordance with the mapping plan, wherein the (n+x) erasure-coded segments are stored in tangible memory media at the plurality of peer nodes.

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