Rotation Scheme Configuration

The basic configuration of a rotation scheme consists of specifying one of the following parameters for a backup on a given calendar day:

Full backup--Performed each time the job is repeated.
Incremental backup--Backs up only those files that have changed (their archive bit has been set) since the last backup was done. After each backup, archive bits are reset so that they are not backed up during the next incremental backup job.
Differential backup--The backup is performed daily after one weekly full backup and the following occurs:
A full backup is made of the job and all archive bits are cleared.

The next day, the differential Backup will back up files that have their archive bit set. (The archive bit will not be reset after the backup.)

The following day, the differential backup will contain all files that have their archive bit set from the previous two days.
Off--No backup takes place on this day.

More information: