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METHOD, DEVICE, AND COMPUTER READABLE STORAGE MEDIUM FOR MANAGING STORAGE SYSTEM

  • US 20200133560A1
  • Filed: 09/24/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/30/2018
  • Status: Active Grant
First Claim
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1. A method of managing a storage system, comprising:

  • determining, for each of a plurality of snapshots, a plurality of blocks referenced by the snapshot;

    determining an evaluation score indicating an impact that deletion of the snapshot has on space release and data retention based on at least one of;

    a reference count for the plurality of blocks, a size of a storage resource associated with the snapshot, and the number of blocks of the plurality of blocks that are referenced only once; and

    selecting at least one snapshot to be deleted from the plurality of snapshots based on respective evaluation scores of the plurality of snapshots.

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