Reprinted from TidBITS by permission; reuse governed by Creative Commons license BY-NC-ND 3.0. TidBITS has offered years of thoughtful commentary on Apple and Internet topics. For free email subscriptions and access to the entire TidBITS archive, visit http://www.tidbits.com/ No Correlation Between Heat and Hard Drive Failure Josh Centers The folks at online backup service [1]Backblaze have once again taken a statistical look at their hard drives to find out [2]if they're affected by temperature. The results seem to counter our general recommendation to give hard drives plenty of ventilation room in '[3]The Care and Feeding of External Hard Drives' (28 April 2014). Overall, Backblaze found no correlation between heat and failure rates, with one exception: the Seagate Barracuda 1.5 TB drives, which failed slightly more often when run at higher operating temperatures. But the Hitachi drives surveyed actually failed a bit more frequently at cooler temperatures. In any case, it's still important to run drives within their specified operating temperatures, which means giving them sufficient ventilation. As long as you don't block cooling vents or put them in insanely hot environments, they should not be adversely affected. References 1. http://www.backblaze.com/ 2. http://blog.backblaze.com/2014/05/12/hard-drive-temperature-does-it-matter/ 3. http://tidbits.com/article/14708 .