Changed block tracking (CBT)

This option is effective for the following backups:

• Disk-level backups of virtual machines

• Disk-level backups of physical machines running Windows

• Backups of Microsoft SQL Server databases

• Backups of Microsoft Exchange Server databases

The preset is: Enabled.

This option determines whether to use Changed Block Tracking (CBT) when performing an incremental or differential backup.

The CBT technology accelerates the backup process. Changes to the disk or database content are continuously tracked at the block level. When a backup starts, the changes can be immediately saved to the backup.