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Adaptive quiesce for efficient cross-host consistent CDP checkpoints

  • US 8,868,513 B1
  • Filed: 06/17/2014
  • Issued: 10/21/2014
  • Est. Priority Date: 02/07/2012
  • Status: Active Grant
First Claim
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1. A method for generating cross-host consistent checkpoints, for use in disaster recovery systems, comprising:

  • transmitting, at a first time, a write quiesce command to a plurality of enterprise host computers, the write quiesce command including a timeout period, wherein the plurality of enterprise host computers are operative to write enterprise data to source datastores;

    determining whether acknowledgements have been received from each of the plurality of enterprise host computers within the timeout period, the acknowledgments indicating that an enterprise host computer of the plurality of enterprise host computers has successfully stopped writing enterprise data to the source datastores;

    adjusting the timeout period for the write quiesce command;

    transmitting at a second time, the write quiesce command with the adjusted timeout period; and

    generating a target datastore, by a continuous data protection disaster recovery system to replicate the enterprise data in the source datastores.

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