Flashback

This option is effective when recovering disks and volumes on physical and virtual machines, except for Mac.

If the option is enabled, only the differences between the data in the backup and the target disk data are recovered. This accelerates data recovery to the same disk as was backed up, especially if the volume layout of the disk has not changed. The data is compared at the block level.

For physical machines, comparing the data at the block level is a time-consuming operation. If the connection to the backup storage is fast, it will take less time to recover the entire disk than to calculate the data differences. Therefore, we recommend that you enable this option only if the connection to the backup storage is slow (for example, if the backup is stored in the cloud storage or on a remote network folder).

When recovering a physical machine, the preset depends on the backup location:

• If the backup location is the cloud storage, the preset is: Enabled.
• For other backup locations, the preset is: Disabled.

When recovering a virtual machine, the preset is: Enabled.