I’m obsessed with data backups and willing to scarify my sleeping time just to get my crucial data backed up. Even with this kind of mentality, I still worry about data-loss due to backup corruption caused by backup drive failure. Data redundancy has been my main priority aside from doing the actual backup itself, and I’ve been using RAID technology for that.
However, RAID requires me to have drives with the same capacities and I don’t think drive manufacturers will continue to produce the same capacity models for the next four to seven years. It looked like I would end up buying a brace of new drives every few years; then came my saviour named Drobo, the data robot from Data Robotics.