If you have been using the build-in backup tool that comes with soho you can upload the files it's been saving to your Dropbox account.
This is a very easy to use tool.
1. First you need to open a Dropbox account. It’s free and easy, just click here.
2. Next enter your Dropbox email and password in the plugin.
3. You can now start uploading any backups you made using the soho
backup tool that comes free with all installs of soho.
Version 4.9 r41+ required
Make sure that you are running 4.9 r41 or later.
This add-on will not function properly on any version earilier than 4.9 r41.
How to find out what version you're running
Log-in to manage your website with Pro Edition (i.e. http://example.com/sohoadmin)
and look in the bottom right corner of the admin tool window (ie. in the footer).
How to update your version
If you're running v4.8.x or earlier than you've got to first update to v4.9 via Fantastico.
Once you're on v4.9 you can update to the latest build using v4.9's built-in Software Updates feature (Main Menu > Webmaster > Software Updates).