Why Should You Protect Your Data? Sooner or later — by mischief, misfortune or mistake — it is statistically likely that you will lose precious data. A 2007 Carnegie Mellon study indicated that 2 to 4% of hard drives have to be replaced every year. That’s just one indication of the threat from hardware failure. The study didn’t look at other causes of data loss: accidental file deletion, file corruption, viruses, hackers, stolen equipment or natural disasters. So, when your data is suddenly gone, how will you get it back?