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Recovery of a virtual machine while running the virtual machine from a backup archive

  • US 10,514,989 B1
  • Filed: 09/08/2016
  • Issued: 12/24/2019
  • Est. Priority Date: 09/10/2015
  • Status: Active Grant
First Claim
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1. A method for recovering a virtual machine while running the virtual machine from a backup archive, the method comprising:

  • emulating the virtual machine by;

    running the virtual machine to be recovered from the backup archive of the virtual machine;

    redirecting read requests from a virtual disk associated with the virtual machine to the backup archive associated with the virtual machine; and

    redirecting write requests to the virtual disk associated with the virtual machine to a first delta file in a production datastore; and

    finalizing the recovery of the virtual machine by;

    creating a snapshot of the emulated virtual machine to redirect changes to the emulated virtual machine to a second delta file in the production datastore;

    cloning an original base virtual disk of the emulated virtual machine, including the first delta file, to the production datastore to create a cloned base virtual disk; and

    patching a virtual disk file descriptor of the second delta file of the emulated virtual machine.

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