The Directory Server provides support for incremental backups, which backs up only those items that have changed since the last backup (whether full or incremental) on the system, or since a specified earlier backup. Incremental backups must be placed in the same backup directory as the full backup on which they are based.
Not all backends support incremental backups. If a backend does not support incremental backups, use of the --incremental option will have no effect, and a full backup will be taken.
The following command runs an incremental backup on all backends based on the
most recent backup:
$ bin/backup --backUpAll --incremental --backupDirectory /path/to/backup