@peroty My Pi’s have a purpose and run for a long time. In practice I’ve found creating SD images cumbersome and the data isn’t easily accessible if needed. The scheme I had been using was to use cron to run a script on the Pi that would create a tar file from the important folders/files and then use scp to copy tarball to my iMac where it would become part of the iMac backup scheme. This worked fairly well but required care to ensure all the important files were captured. It also meant distributing SSH keys so scp could upload without needing a password.

With my latest Pi I took a different approach and I expect to use it in the future. I install SAMBA on the Pi and in Arq I create a Network Volume to connect to the Pi file system. When Arq runs it automatically mounts the Pi filesystem and I pick use Arq’s UI to pick what should be backed up, create a schedule and so on. One of the benefits is Arq will make it quite clear if the backup fails where the script solution on the Pi could fail without me knowing.