DNN based sites consist of 2 components:
the file structure which contains the code which is the "framework" for running the site.
the database which contains settings, data, and content for the site.
When you add modules, you may add both files to the framework, as well as add or modify database table structure and data. As a result, it's important that when you back up a DNN based site, that you get a "point in time" snapshot of both files and database (i.e., both done at the same time).
Because our file system backup and our database backup solutions run asynchronously, they will not necessarily be captured at the same time. As such, if you need a backup of your DNN site, it's strongly recommended that you perform a backup of the site. Our support team can make a backup of your database and provide that zipped archive in your private directory. For your site files, you have a couple options for backups:
On all servers, you can use FTP to copy your site's files locally to your computer.
One servers with Plesk 11.x you now have the aditional option of using the Add to Archive feature to zip your site's files. This feature is found in the Plesk File Manager. Once in the File Manager, check the box next to the httpdocs directory, which is your site's root directory. Then using the More drop down menu, select the Add to Archive feature. This will then prompt you for a file name to use and make a zipped archive of your site's files.
It is STRONGLY recommended that you obtain a complete backup of your site in this fashion:
if you intend to UPGRADE your DNN version... this will ensure you can roll back to where you were.
if you intend to install MODULES which are of questionable stablility.