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Fixed size extents for variable size deduplication segments

  • US 9,753,648 B2
  • Filed: 02/08/2016
  • Issued: 09/05/2017
  • Est. Priority Date: 03/08/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a data stream at an interface;

    performing segment boundary identification and segment fingerprinting to generate a plurality of variable size segments including a first segment;

    determining whether the first segment is maintained in storage;

    determining a first number of fixed sized extents in the storage needed to maintain the first segment;

    maintaining the first segment in a plurality of contiguous fixed size extents in the storage,wherein after the first segment is deleted, the plurality of contiguous fixed size extents in the storage used to maintain the now deleted first segment are used to maintain portions of a plurality of new segments without having to perform recompaction.

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