https://wccftech.com/backblaze-releases-hard-drive-findings-for-q1-2019-hard-drive-failure-rates-for-all-major-suppliers/

As of March 31, 2019, Backblaze had 106,238 spinning hard drives in their cloud storage ecosystem spread across three data centers. Of that number, 1,913 were boot drives and 104,325 were data drives. Backblaze published a review on their findings in Q1 of 2019 amongst their data centers and it also included insights and observations along the way.

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