In this tutorial you will learn how to create a site archive for an existing Drupal site so that you can import it into Pantheon. You'll learn how to create one single archive file that contains all the components we need: database, code base, and files. First, we'll demonstrate how to create an archive using the Backup and Migrate module, using a Drupal site's UI, and then you'll learn how to accomplish the same task using the Drush
archive-dump command. In this tutorial we assume that you either already have Backup and Migrate module installed on your site, or that you have Drush set up and are familiar with the basics of using it.