I think you can encrypt drives by using a key stored in the TPM, if you have one. See the Arch wiki for info.
Though I have heard the TPM is not as secure..
Thanks for responding. I actually don’t have Immich yet on the Raspberry Pi, so it’s the first time I will be installing it and then importing the photos. I don’t actually care a lot about the migration, since I can just reconfigure the services. I want to ensure that if a drive fails, I can restore the data. I would try RAID, but I read that “RAID is not backup”. Or I could just run the command you provided in a cronjob.
So, OP has 45.57 gold medals only for his first torrent on the list?