Storing all files in the cloud? [self hosted]

I have BOX set up as a cloud service, and I would like 100% of the files to be stored there so that I can use a server with less disk space. When uploading a file to an Opportunity, the file is stored locally and there is no way to specify the location to save it, or select an existing file from the Documents.

How can I go about telling ONLYOFFICE to save ALL files to a cloud service and put nothing on the actual server?

Hello,
You can migrate portal data to these cloud services:
https://helpcenter.onlyoffice.com/administration/control-panel-storage.aspx

Why can’t I use BOX or DropBox? I can use them for the Documents system! They are far easier to implement and you don’t have to deal with annoying sales people.

Alternatively, is there a config where I can specify the path of the local storage? I could always just mount another drive to the server. Symlink?

Portal files are stored at
/app/onlyoffice/CommunityServer/data/ (docker)
/var/www/onlyoffice/Data/ (deb/rpm)
So you can mount a drive to these directories.