I need personal cloud storage & I am confused whether to by My book Live or My book Live Duo. The only difference I undestand is backup of your data. Anyone would prefer to have redandunt storage but it costs you almost double. I am thinking to set automatic routine backup of one most important folder on drive to computer. To keep backup of entaire drive on cloud seems to be impossible for now. If you have huge size availanle on your computer/laptop you can backup all data from drive.