database and files back up plugin?

I want to start instituting security steps to my blog. But before I do, I want to back up the database and files. I remember seeing a description for a plugin that does both for you at the click of a button. But I can’t find it again. I may have been dreaming. Does a plugin like that exist?

I know there’s one to back up the database, but I want one that backs up both the database and the core files w/ one mouse click. if it does exist, please reply w/ a link to the description on the WP site.

This issue is not urgent.