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Backup image duplication

  • US 9,183,094 B2
  • Filed: 05/25/2012
  • Issued: 11/10/2015
  • Est. Priority Date: 05/25/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • configuring a duplication operation, wherein the configuring comprisesstoring information identifying a duplication window,storing information identifying a source storage device, andstoring information identifying a target storage device;

    detecting whether data can be copied in deduplicated form, whereinthe detecting comprises comparing, between the source storage device and the target storage device at least one of a first segment size with a second segment size, a first type of chunk sizing with a second type of chunk sizing, or a first signature generation algorithm with a second signature generation algorithm;

    calculating a predicted duplication rate, whereinthe predicted duplication rate comprises an estimated rate at which the data can be copied from the source storage device to the target storage device, andthe data is copied during the duplication window;

    selecting a backup image to include in the duplication operation, whereinthe duplication operation comprises a plurality of backup images, andthe selecting is based on a size of the backup image, the predicted duplication rate, and the duplication window; and

    executing the duplication operation during the duplication window, whereinthe executing comprises copying at least a portion of the data from the source storage device to the target storage device.

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