With the advent of Cloud Computing, there would be no need for storing data in a our computers. Although we are now talking about terabytes of storage instead of megabytes a few years ago, businesses (and soon PC users) would be using cloud instead.
Companies would have no fear for hard drive crashes and ultimately loss of data.
Let's face it, anytime you use online banking or online purchase you are in the cloud.
So it looks like hard drives are going to be a thing of the past too.
So, forget back ups... Just get a tablet or smart phone or even a smart watch and you can do your computing anywhere you are...that is boondocking or otherwise.