According to IDrive: “We’re a taking a new approach to backup, giving our users the best of both worlds with our new Hybrid backup feature. IDrive users can now backup their critical files locally and also in the cloud. Local backup solves one of major pain points of online backup, slow restore speeds. Backing up large amounts of data becomes easy as well with local backup, as the large data sets do not have to be backed up over the internet, as upload speeds can be slowed but rather locally, which offers faster backup.”
Details:
http://blog.idrive.com/2014/09/04/introducing-idrive-hybrid-backup/