For me, I only back up data I can’t replace, which is a small subset of the capacity of my NAS. Personal data like photos, password manager databases, personal documents, etc. get locally encrypted, then synced to a cloud storage provider. I have my encryption keys stored in a location that’s automatically synced to various personal devices and one off-site location maintained by a trusted party. I have the backups and encryption key sync configured to keep n old versions of the files (where the value of n depends on how critical the file is).

Incremental synchronization really keeps the bandwidth and storage costs down and the amount of data I am backing up makes file level backup a very reasonable option.

If I wanted to back up everything, I would set up a second system off-site and run backups over a secure tunnel.

It’s on my list! Just haven’t gotten around to it yet.

To be honest, I recognized the screenshot and know the summary of the movie but I haven’t actually seen it.

The 1983 movie WarGames. This is the computer’s conclusion after simulating every possible outcome of Global Thermonuclear War.