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NetVault Backup Plug-in for VMware 11.4.5 - User Guide

Introducing NetVault Backup Plug-in for VMware Installing the plug-in Configuring the plug-in Defining a backup strategy Using the image-level backup method Using the file-level backup method Restoring image-level backups Restoring file-level backups Troubleshooting

Enabling CBT on individual virtual machines

By default, CBT is disabled on a virtual machine. If you want to perform Incremental or Differential Backups of virtual machines, you must enable CBT for the Full Backup that serves as the base backup for subsequent Incremental and Differential Backups.

The Plug‑in for VMware provides the following methods to enable CBT on virtual machines:

Enable CBT on specific virtual machines: To enable CBT on specific virtual machines, you can use the Enable Change Block Tracking method, which can be accessed from the Actions list on the NetVault Backup Selections page. This section describes the procedure for enabling CBT on individual virtual machines.
Enable CBT on all virtual machines included in a backup: To enable tracking automatically on all virtual machines that are included in a backup job, you can set the backup option “Enable Changed Block Tracking for VM. For more information, see Performing image-level backups, Enable Change Block Tracking for VM.
1
Start the Backup Job Wizard, and click Create New next to the Selections list.
5
In the Actions list, click Enable Change Block Tracking.
The reconfiguration of Changed Block Tracking takes effect only after the virtual machine goes through a stun and unstun cycle. This cycle includes power-on, resume after suspend, migrate, or snapshot create, delete, or revert operations.

Disabling CBT on a virtual machine

After you enable CBT on a virtual machine, all subsequent Full, Incremental, and Differential Backups are performed as CBT-based backups for that virtual machine. To stop using CBT, you must disable this feature.

1
Start the Backup Job Wizard, and click Create New next to the Selections list.
5
In the Actions list, click Disable Change Block Tracking.

Manually disabling CBT on a virtual machine

To manually disable CBT on a virtual machine, use the following procedure.

2
In the virtual machine's configuration (“.vmx”) file, edit the following entry and set it to False:
3
In the “.vmx” file for each virtual drive, edit the following entry and set it to False:
The “.ctk” files for the virtual machine are automatically deleted when you turn on the virtual machine.

Enabling or disabling quiescing of virtual machines

This section includes the following topics:

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