By default, Changed Block Tracking (CBT) is used for backups using the Virtual Server Agent. For virtual machines where there is a known issue , you can turn off CBT to run backups using Cyclic Redundancy Check (CRC) instead.
Procedure
To disable Changed Block Tracking for a subclient:
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From the CommCell Browser, navigate to Client Computers > virtualization_client > Virtual Server > VMware > backup_set.
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Right-click the subclient and select Properties.
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Click the Backup Options tab.
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On the Backup Options tab, clear the Use Changed Block Tracking option.
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When the Use Changed Block Tracking option is selected, CBT is enabled and used for backups where it was not already specified. The vsbkp log indicates that CBT is used.
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When the Use Changed Block Tracking option is cleared, CBT is not enabled, and CRC is used for backups. The vsbkp log indicates that CRC is used.
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Click OK.
This change is tracked in the Audit Trail Report.