Data back-up is a process in which you save your valuable data to some remote server or in some media which can be used to restore them back when you need it. You may face situations in which you application becomes corrupt or your data file is corrupted. Intentional damage, natural disasters, and hardware failure are some of the other situations which makes your lose your data. During such situations you can use the data that is backed up in your remote server to restore.

Any web hosting account that you purchase also comes up with a comprehensive backup scheme that can be used to backup the important data that you might have in the server. If you have a site that has many users (members), then it is important that you also backup the data of your users also. Under such situations it is better to backup the site data and the users’ data separately so that you can restore which ever you want.