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Hybrid open-loop and closed-loop erasure-coded fragment retrieval process

  • US 20100094959A1
  • Filed: 10/14/2009
  • Published: 04/15/2010
  • Est. Priority Date: 10/15/2008
  • Status: Active Grant
First Claim
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1. ) A method for retrieving erasure-coded fragments associated with approximately sequential segments, comprising:

  • requesting a first set of the erasure-coded fragments, using a fragment pull protocol, by an assembling device from a plurality of fractional-storage servers; and

    requesting a second set of erasure-coded fragments, using the fragment pull protocol, to compensate for the fragments of the first-set that failed to arrive at the assembling device;

    wherein while requesting the first set fragments associated with a certain segment, at least one compensation request is made for a second set fragment associated with a prior segment.

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