This article is only relevant when Veeam Backup & Replication is used with the following Hyper-V versions. In these older versions of Hyper-V there was no native CBT function, and Veeam had to use it's own custom driver.
- Server 2008 R2
- Server 2012
- Server 2012 R2
Starting with Server 2016 Hyper-V has its own CBT feature which Veeam Backup & Replication will use.