You can enable Changed Block Tracking (CBT) backups for an Amazon EC2 VM group.
Important
In certain cases, the Commvault software might not delete snapshots that are intended to be temporary, and these snapshots can increase your monthly costs for AWS. For information about identifying and deleting these snapshots, see Cleaning up resources after Amazon EC2 instance or backup deletion.
Procedure
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From the navigation pane, go to Protect > Virtualization.
The Virtual machines page appears.
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On the VM groups tab, click the VM group.
The VM group page appears.
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On the Configuration tab, in the Settings area, move the Use changed block tracking toggle key to the right.