Can you point me to any evidence contrary to Google's results? And I mean large-scale independent research, not word-of-mouth or some guy's blog.
I'm not saying Google is wrong but what I am saying is theirs is a single study that contradicts widespread understanding of disk failure modes. Before jumping on the google bandwagon, it'd be prudent to wait for independent studies that duplicate their findings. After all, there could be mistakes in their methodology and/or data. In the meantime, I'll continue to follow the guidelines I've seen work in practice for years. Keep hard drives cool and keep 'em running and once past the infant mortality period they'll last a lot longer.