I collect 4 K and HD camera uploads of 12 mobile devices from the whole family in my Drobbox.
So: much too much for storing on the SSD of my MacBook Pro connected to my Dropbox account conveniantly through the SmartSync feature (I can select specific files to work on, some offline).
However, when I'm editing movies with fcpX or iMovie, I of course need offline access because many videos are a few GB big. I than synchronized the whole dropbox on an external 5 TB disk; from there it's much easier to delete groups of photos and videos, as this function is unacceptably (!) cumbersome in the cloud itself via Dropox. As an old Dropboxer I remember that oncee upon a time it used to be much easier (though not as easy in Google Photos there was an app or add on that allowed to quickly select and deselect pictures in groups I forgot the name - Drobox should offer something like that to its customers again. Anyway, the fact that every time I want to editing my huge video project, I have to disconnect the Drobox link from my computer and set it up again for the external hard drive. This is annoying and error-prone, because the Dropbox folder must be available at boot time!
So my new idea is to allow - in the drop box app - for an additional external hard drive set to be 100% synched, but as a folder to be mounted or unmounted at any time without unwanted destruction of one's work? Please! My USB (and I guess all big non SSD) drives are not fast enough during the boot process to be recognized by the system. As of now, the Dropbox app starts before the drive is ready and produces the error message to reconnect to the Dropbox account or quit the program because no Dropbox folder was found. And when the external hard drive is disconnected from the computer while the Dropbox app is running, there is a chance that Dropbox will start deleting files it can no longer "see" before it realizes that external drive has been removed. I am among the victims of unnecessary and unnoticed data loss.
Is it asking too much to save space on my Mac with smart sync while still be able to use a fully synchronized external hard drive when needed? (It is basically needed only when it comes to very big files (video). Synching those files should be doable at any time (e.g. nighttime or weekends), while not disturbing during office hours. Currently, while writing this, I have not mounted the external hard drive. The start-up noise produced when the sleeping HDD wakes up by the finder is annoying. And this noise appears even if I only use my SSD (loading or saving files that have no relation with dropbox). Cheers