S#*t happens. VaultPress saves the day. Rinse, repeat. They provide real-time backup of all my files plus the ability to rollback to a previous safe versions. There are cheaper alternatives on the market, but they tend to either not work as well, be more cumbersome to setup, or a variation of those two. VaultPress is made by Automattic, the parent company for WordPress, so you know it's well coded and built to work.