The document provides instructions for setting up different types of remote backups from a Thecus N5550 NAS to an N4800 NAS using Data Guard. It includes steps to set up:
1) A full backup that backs up the entire N5550 to a target folder on the N4800.
2) A custom backup that allows selecting individual folders on the N5550 to back up to the target folder on the N4800.
3) An iSCSI backup, though the steps for that are not shown. The full and custom backups can be set up as real-time or scheduled backups according to needs.