I put all my files on a /data partition, including home. Very easy to back up to external disk. Last time I bought a Thunderbolt4 cable, plugged them in direc

I put all my files on a /data partition, including home. Very easy to back up to external disk. Last time I bought a Thunderbolt4 cable, plugged them in directly and rsync copied everything in minutes. Rsync does block checksums; run it twice. Important files are in git, which can help. ext4 has metadata checksums as well. I kept original files for a another week, but have external drive backup and old photos on bluray too.