Backblaze Hard Drive Stats for 2018

This review looks at the hard drive failure rates for the data drive models in operation in our data centers. At the end of 2018 Backblaze was monitoring 104,954 hard drives used to store data. The Annualized Failure Rate (AFR) for 2018 for all drive models was just 1.25%, well below the rates from previous years as we’ll discuss later on in this review. While comparing the annual failure rates of hard drives over multiple years is a great way to spot trends, we also look at the lifetime annualized failure rates of our hard drives. The complete data set used to create the information used in this review is available on our Hard Drive Test Data page.

Source: www.backblaze.com