When you first sign up for a Storage Made Easy account, the default Cloud will likely be set to Storage Made Easy depending on the package you signed up for. This section of the Wiki will detail how you can add other Cloud Providers to your account.
If you ever upload files to your file store outside of Storage Made Easy all you have to do to ensure the file repository is up to date. The options for doing this are outlined in the Wiki here
We'll walk you through an end-to-end example of signing up and mapping your first Cloud Provider to your account. We've broken the steps to make it easy to follow and the whole process should not take more than a few minutes.