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EFFICIENT CREATION OF MULTIPLE RETENTION PERIOD BASED REPRESENTATIONS OF A DATASET BACKUP

  • US 20170277597A1
  • Filed: 03/25/2016
  • Published: 09/28/2017
  • Est. Priority Date: 03/25/2016
  • Status: Active Grant
First Claim
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1. A method comprising:

  • after receiving, by a storage system that deduplicates data, a request to back up a first dataset,creating, in a first storage tier corresponding to the storage system, a first backup of the first dataset, wherein the first backup corresponds to a first retention period and the first backup comprises first metadata;

    copying and modifying, in the first storage tier, the first metadata to create a second backup of the first dataset, wherein the second backup comprises second metadata and the second backup corresponds to a second retention period that is different than the first retention period;

    replicating the second backup to a second storage tier; and

    removing the first backup from the first storage tier after expiration of the first retention period.

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