Backup Server Edition

How do we can back up whole server at once? This will include users and business on it.

Kind Regards

All data for every business is in an application data folder. You should, of course, be backing up your server. As long as the application data folder is included in that backup, you would have everything without taking any action in Manager. See this Guide: https://www.manager.io/guides/best-practices/data-backup-restoration-and-transfer.