Comment by ubermonkey

I was once advised to measure your backup security in zip codes and time zones.

You have a backup copy of your file, in the same folder? That helps for some "oops" moments, but nothing else.

You have a whole backup DRIVE on your desktop? That's better. Physical failure of the primary device is no longer a danger. But your house could burn down.

You have an alternate backup stored at a trusted friend's house across the street? Better! But what if a major natural disaster happens?

True life, 30+ years ago when I worked for TeleCheck, data was their lifeblood. Every week a systems operator went to Denver, the alternate site, with a briefcase full of backup tapes. TeleCheck was based in Houston, so a major hurricane could've been a major problem.