Well, all I know about QNAP is that they also have Linux underneath. In a few words, MBL and QNAP are Linux servers.
Via Linux/OS/CLI, you should be able to backup either using FTP or rsync. For the type of backups you want to perform, rsync is the only option I know of. Now the bad part for it, you would need to be mid-advanced user
Overall the steps would be:
Some info for rsync, but plenty out there…
To enable SSH for MBL:
If I remember all my steps, this is what I did. Make sure you save backups copies for the files before you edit them.
SSH to MBL using root, if works, continue only if you want to allow other users to SSH as well. Otherwise you are done.
Create shares, users, set passwords and permissions via dashboard
Allow Users to SSH:
edit file /etc/ssh/sshd_config
Change “AllowUsers” line by adding user names such as:
AllowUsers root user1 user2
Optional: Set users home dir: edit file /etc/passwd
The following will set home dir to “Public”
Change from “/shares:/bin/sh” to “/shares/Public:/bin/sh”
Restart ssh deamon or reboot: