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Each quarter, Backblaze realize an “hard disk stat” blog post with detailed information on (spinning) hard disk durability. Those reviews look at the quarterly and lifetime statistics for the data drive models in operation in Backblaze’s data centers.

As of September 30, 2018 Backblaze had 99,636 spinning hard drives. Of that number, there were 1,866 boot drives and 97,770 data drives. A lot to have some interesting data.

Latest report (Hard Drive Stats for Q3 2018: Less is More) it’s already available and the following table covers what happened in Q3 2018:

Backblaze Q3 2018 Hard Drive Failure Rates chart

The complete data set used to create the information used in this review is available on Backblaze’s Hard Drive Test Data page.

Check also the previous report (Hard Drive Stats for Q2 2018) because it includes some interesting data about the difference between enterprise and consumer disk drive:

Annualized Hard Drive Failure Rates by Time

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Virtualization, Cloud and Storage Architect. Tech Field delegate. VMUG IT Co-Founder and board member. VMware VMTN Moderator and vExpert 2010-24. Dell TechCenter Rockstar 2014-15. Microsoft MVP 2014-16. Veeam Vanguard 2015-23. Nutanix NTC 2014-20. Several certifications including: VCDX-DCV, VCP-DCV/DT/Cloud, VCAP-DCA/DCD/CIA/CID/DTA/DTD, MCSA, MCSE, MCITP, CCA, NPP.