Best practice for backing up docker volumes and bind mounts?

I have one docker mini-pc running 24x7. Now I’d like to backup docker containers including docker-volumes and bind mounts oer if this isn’t a good idea at least the data (docker volumes and bind mounts) to another mini-pc which will be powered up just to save the data or I use another backup methodology backing up to my NAS and restore from this backup to the second mini-pc if the 24x7 mini-pc fails.
You may have already guessed that I’m not a Linux- or Docker-expert :wink:

Thanks a lot for your input/feedback.