Site backups are essential because problems inevitably occur and you need to be in a position to take action when disaster strikes. Having a backup of your WordPress website will allow you to spend even more time being creative and productive. How often should you back up? That depends on how often you blog, how often you want to do this, and how you would feel if your database were lost along with contents. It is your decision. I will give you following backup files:1) Backup of your WP DatabaseYour WP database contains every post, every comment and every link you have on your blog. If your database gets erased or corrupted, you stand to lose everything you have written. There are many reasons why this could happen and not all are things you can control. With a proper backup of your WP db and files, you can quickly restore things back to normal.2) Backup of your files which includes- Your WP core files- WordPress plugin- Your WordPress themes- Your uploaded images- Your JavaScript files etcIn-short complete manual backup of your wordpress websiteP.S: I can also upload backup files on Dropbox but on request. I don't do multi wordpress website backup/restore
