Dell NetWorker 19.9 Administration Guide

Revert (or rollback) a virtual machine backup

The first virtual machine recovery option available in the NMC Recovery wizard is to revert, or rollback, a virtual machine backup. With a Revert a virtual machine backup recovery, you use an existing virtual machine to rollback the VMDKs as a virtual machine.

1. In the Select the Virtual Machine Recovery Method page:
   1. Select Revert a Virtual Machine.
   2. Click Next.
   The Select Options to Revert a Virtual Machine page displays
2. In the Revert Type pane of the Select Options to Revert a Virtual Machine page:
   1. Select Revert both VM configuration and data to revert both the configuration information (such as operating system, virtual machine size) and data for a virtual machine. When you select this revert type, the Delete existing disk on disk configuration mismatch option appears in the Revert Options pane to allow you to overwrite an existing disk if a configuration mismatch occurs.
   2. Select Revert VM Data Only to revert only the virtual machine data without changing the virtual machine configuration.
3. In the Revert Options pane of the Select Options to Revert a Virtual Machine page, choose from the following options
   1. Select Revert all disks on this virtual machine to rollback all VMDKs, or select Revert one or more disks only and then select a specific disk drive to rollback only that disk.
   2. Select the Power on virtual machine checkbox to power on the virtual machine after the restore.
   3. Select Delete existing disk on disk configuration mismatch if you want to be presented with the option of deleting the existing disk if a disk configuration mismatch is detected. Note that this option only appears when you select the Revert both VM configuration and data revert type in step two.
   4. Click Next.
   NOTE:If the virtual machine is currently powered on, a dialog displays requesting confirmation to power off the virtual machine. Additionally, if a change has occurred in the virtual machine configuration since the backup, a warning message displays.

   

   NOTE:The entire VMDK will be rolled back unless you have CBT enabled, in which case only the changed blocks will be moved.
4. In the Select Alternate Recovery Sources page:
   1. Select the original backup or a clone copy if one is available.
   2. If recovering from a clone that is not on a Data Domain device, or recovering from a Data Domain Cloud Tier device, specify the DD Boost clone pool.
   3. Click Next.

   

5. In the Perform the Recovery page:
   1. Specify a name for the recovery and check the summary at the bottom of the page to ensure all the details are correct.
   2. Click Run Recovery.