With this scheme, the data for each backup is stored in a separate archive file (.tib extension). A full backup is created at the first launch. The following backups are performed according to the incremental method.
Set up the backup retention rules and specify the appropriate settings. The outdated backups, i.e. backups older than the designated number of days (defined by the retention rules) are deleted dynamically in compliance with the following procedure:
Note that it is not possible to delete a backup which has dependencies. For example, if you have a full backup plus a set of incremental backups, you cannot simply delete the full backup. If you do, the incremental backups will not be recoverable. The backups which become subject to deletion (according to the retention rules) will not be deleted until all the dependent backups also become deletable. This limitation can be overcome by utilizing the Always Incremental backup mode.