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Backup cache with immediate availability

  • US 9,619,404 B2
  • Filed: 04/16/2013
  • Issued: 04/11/2017
  • Est. Priority Date: 04/16/2013
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • receiving, by a processor, metadata describing a first cache configured as a master cache having non-destaged data;

    defining, using the received metadata, a second cache configured as a backup cache for the master cache;

    retrieving, subsequent to defining the second cache, the non-destaged data from the first cache; and

    storing the non-destaged data to the second cache;

    wherein the metadata is selected from a list comprising a set of regions, on a storage device, that are associated with the first cache, and a set of pointers referencing the non-destaged data.

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