All the Carbonite Backup Personal Plans back up the following types of files in your Users folders: If you have any files over 4 GB must be manually added to your backup.
Documents
Photos
Email
Music
Settings
Videos*
*Video files are backed up automatically with the Prime plan. They can be added to your backup manually on a Basic or Plus plan.
Personal Plus and Prime plans ADDITIONALLY back up:
External hard drives
Operating system and software programs†
†Operating system and software programs are included in Mirror Image backup, which creates a full-system backup to a local drive.