I have a SSD MacBook Pro which allows for 300 GB free space to which I selectivly sync my local drobox-folder where I store things I need often. Since my 2 TB cloud Dropbox gets Photo- and Video Uploads from around 10 devices (e.g. from my kids via smartphones and iPads) it'll be impossible to sync that to my built in SSD. For that purpose I created a Dropbox-folder in my external HDD of 4 TB size which was completly synched at one point in time, i.e. an exact copy of what I stored in my dropbox cloud. Now it seems difficult to "pump up" this external drive, because the local dropbox folder seems to be either one and not both.
How can I achieve this without having to buy a second computer, only to fill the HDD. I'd appreciate a quick response.
In this case it would be helpful to tell dropbox the an external drive is the folder to be synched to and that the absence of the folder is not a command to delete the content that is mirrored therein. Deletion is an option of an express command by an active user. That would help a lot.