When you buy office 365 subscription, it comes with 1TB OneDrive. I also have Carbonite online backup where I pick and choose which folders I want to back up. It seems to me that I can cancel Carbonite subscription and just synchronize folders using One Drive.
Is there a problem with idea?
They fulfill 2 different requirements. If you only need current files, OneDrive is great. But if you need to go back in time (ie June 20 @ 5PM), Carbonite will do a much better job.