Changed Block Tracking (CBT) is an incremental backup technology for VMware virtual machines (VMs) running on VMware ESX(i). With the use of CBT technology, %edition_name% is able to detect block changes in VMs since last backup, without scanning through the whole Virtual Machine File System (VMFS). As a result, the backup performance will be improved significantly.
%edition_name% automatically leverages the CBT technology when CBT is enabled for the VMs selected in the backup set (i.e. VDDK mode backup). By default, the 'Auto enabled Changed Block Tracking (CBT)' option is enabled, so %edition_name% will enable CBT on VMs when it detects the VM and the ESX(i) host support this feature.