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Managing storage space based on multiple dataset backup versions

  • US 10,620,834 B2
  • Filed: 03/25/2016
  • Issued: 04/14/2020
  • Est. Priority Date: 03/25/2016
  • Status: Active Grant
First Claim
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1. A method comprising:

  • after expiration of a retention period associated with a first backup for a first dataset in a first storage tier;

    removing, by a computing device, from a listing of constituent data units of the first dataset a plurality of identifiers corresponding to a first set of the constituent data units that are shared with a second backup for a second dataset in the first storage tier;

    marking, by the computing device, in the listing another plurality of identifiers corresponding to a second set of the constituent data units that are shared by a third backup for a third dataset in a second storage tier; and

    removing, by the computing device, from the first storage tier the first and second sets of the constituent data units, after migrating the second set of the constituent data units to the second storage tier based on the marking.

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