I am running into an issue where very large incrementals are being created even when the device is having little usage. On a 1.8 TB drive (1.56 TB used), an incremental of 980 GB and another incremental of 820 GB occurred a few days later in the past week. What could be causing this?
I am using veeam agent for windows 13.0.1.1009
+23Do you have any deduplication role installed? I’ve seen this behaviour when Windows Server was running background dedupe processing.
+11Seems like CBT is messed up and all datablocks are seen as ‘new’
+2
Check if Change Block Tracking is enabled and the Veeam CBT driver is installed on the machine. If CBT is missing or gets reset the incremental can become very large
+11
Check that you have installed the Veeam CBT driver.
Check whether your database has loaded data massively.
As a test, create a new job and run a new full backup, then test the incremental backup. Is it possible that there is an anomaly in the CBT calculation?
If you have performed an in-place upgrade and installed the cbt driver, you must reboot twice
KB4811: Veeam Agent for Microsoft Windows 13.0.1.120 to 13.0.1.1009 Upgrade Notes
On which repository do you perform the backup from the most specific ones, please?
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