I have a central NAS server that hosts all my personal files and shares them (via smb, ssh, syncthing and jellyfin). It also pulls backups from all my local servers and cloud services (google drive, onedrive, dropbox, evernote, mail, calender and contacts, etc.). It runs zfs raid 1 and snapshots every 15 minute. Every night it backs up important files to Backblaze in a US region and azure in a EU region (using restic).
I have a bootstrap procedure in place to do a “clean room recovery” assuming I lost access to all my devices - i only need to remember a tediously long encryption password for a small package containing everything needed to recover from scratch. It is tested every year during Christmas holidays including comparing every single backed and restored file with the original via md5/sha256 comparison.
Elon Musk: “Hold my beer”