For years I’ve used two programs called FolderClone Pro and FolderMatch to back up and/or synchronize my data. Both these programs and others are created by Saltybrine software, a company run by dedicated Christians that use their resources for kingdom purposes. They are excellent utilities, as attested to by the comments on their homepage and reviews by others.
May I encourage you to give them a try as well. You’re data will be secure and you won’t be sorry.