Also keep some copies away from your house, perhaps an extra external hard drive or thumb drive kept at a friend's house or even in an outbuilding in the back yard (properly protected of course).
In the old days, I used to keep floppy disk backups at my mother's house. I actually print out the most important pages on paper. I have notebooks of that kind of stuff going back as far as the late 1980s.
Also keep some copies away from your house, perhaps an extra external hard drive or thumb drive kept at a friend's house or even in an outbuilding in the back yard (properly protected of course).
In the old days, I used to keep floppy disk backups at my mother's house. I actually print out the most important pages on paper. I have notebooks of that kind of stuff going back as far as the late 1980s.