True that. However, I don't think you'll see any kind of comprehensive study with nearly the sample size of the Google paper. I'd guess they go through tens of thousands of HDD's every year if not every month. Also they are brand agnostic, consuming drives from all major manufacturers (don't know if that increases variance in the study or not). It's comforting to understand that HDD failures normally occur within the first 3-6 months of deployment and healthy drives have flat failure rates until after year three (3). This pretty much mirrors my personal experience (both in DVR usage and desktop usage).