I am setting up the server on Raspberry Pi 4 with RaspiOS. I want to download torrents and I have connected an external hdd USB3 for it… I was told that you could change the Docker directory to the external hdd to mount the containers on it. That way the microsd would work less and in case of failure, it would only be to install RaspiOS again and change the directories… All the configuration, docker containers, etc are in the hdd… So far I have not succeeded, although I have listened to 2 or 3 tutorials.

You can also mount everything on the Raspberry, leaving the microSD only for booting, but it is more complicated…

Excuse my DeepL english