I have a two-way sync between an drive on my computer and an external hard drive on our network to serve as a backup in case of data loss.
I would like to add a one-way backup from my Android phone DCIM photos folder to the networked backup location, but when I attempt to do so I get an error message "cannot be added inside an existing sync folder. Please choose another folder."
Of course, I can choose another folder, but this would require me to later manually move the files from that backup folder into my main backup archive. I would prefer to have my camera photos automatically added to both my computer drive and external hard drive in case either of them fail (allowing me to occasionally wipe the photos from my phone to free up space).
Is this goal possible?