As the title says, i recently printed a nice case for my RPi3 and HDD that intend to run as an offsite backup machine.
Looking for recommendations on what backup service to run. I want to backup my Nextcloud and a "changes only" backup/cloning solution would be optimal but i have yet to find one.
Duplicacy is a great solution, well worth the cheap price. It can do changes only over many different protocols.
I also would recommend setting up something like Uptime-Kuma on it, and also an instance of it home. This way you have an external monitor for your own home network, but also a monitor for your backups! Both Duplicacy and Uptime-Kuma can run on docker.