Product Version: 8.5
Last Modified: 04 April 2019
An error message is stating that the source host did not provide valid CBT/RCT/CRT data for a VM and the proprietary change tracking technology will be used.
After the initial (full) VM backup or replication, all consequent job runs are forever incremental. By default, NAKIVO Backup & Replication uses VMware CBT, Hyper-V RCT, and Nutanix CRT technologies to identify what data has changed since the last job run. Factors like power outage and other, can cause these technologies to reset and lose a track of incremental changes for a VM.
The above error message appears in case the CBT/RCT/CRT error handling is set to switch to proprietary change tracking technology.
If the problem persists, try editing the job and setting a different error handling on Options step of back and replications jobs.
- For VMware, refer to the following articles:
You can also reset CBT for the VMware VM manually.
- For Microsoft Hyper-V, refer to the articles below:
- For Nutanix AHV, refer to the Backup Job Wizard for Nutanix AHV: Options article.