Changing the nextcloud folder

Nextcloud version 11.0.1 :
Operating system and version Ubuntu Server 16.04:
PHP version 2 :

I have an internal drive on my machine, that I called “Data”. This drive is where all our data is shared within our internal network. That is where all the data is…this drive is 3 times a week, copied to an external drive.

What I am trying to do right now, is have nextcloud acess this /Data/ so that I can access it from outside the LAN.

I have no clue how to do it…

I imagine by the easiest way would be to add this in as an external filesystem. Copying into the NC directory is likely not what you want.