Features and bells and whistles are great but if it affects your computer's performance it is going to slow productivity. You should not be able to feel the impact of a backup solution and it should never interrupt your work. To have different performance modes, such as battery mode or presentation mode, are key. For example: If you are presenting a PowerPoint to an important customer you should not have to feel a hang because a backup has started. The solution should intelligently notice that you are running a presentation and slow down the backup so that it goes unnoticed.