I know that for data storage the best bet is a NAS and RAID1 or something in that vein, but what about all the docker containers you are running, carefully configured services on your rpi, installed *arr services on your PC, etc.?
Do you have a simple way to automate backups and re-installs of these as well or are you just resigned to having to eventually reconfigure them all when the SD card fails, your OS needs a reinstall or the disk dies?
By using NixOS and tracking the config files with git
For real, saves so much space that would be used for VM backups.
Aside from that, I have anything important backed up to my NAS, and Duplicati backs up from there to Backblaze B2.