Problem: Replication jobs are failing because Change Block Tracking (CBT) is not enabled on the protected VMs.
Cause: CBT is typically enabled by default, but in some cases it may be disabled. If CBT is disabled, the AVM is unable to perform incremental replications.
Solution: In the event CBT has been disabled, do the following:
Step 1. Power off the VM.
Once it is powered off, right-click the powered off VM and click the Edit Settings option.
Step 2. Click the Options tab and select General in the Settings list.
Click the Configuration Parameters button.
Step 3. The Configuration Parameters screen will appear. Confirm the following:
- ctkEnabled – Confirm that the value is set to true.
- scsi#:#.ctkEnabled – Confirm that the value is true for all drives in the VM. To change the value, double click the field and enter the correct value.
Press the OK button to save and leave the Configuration Parameters screen.