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| Photo from Backblaze |
Backblaze is a cloud data storage/backup provider, that was founded in 2007. They deal with tons of hard drives every day, therefore, they will release their hard drive statistics (drive count and failure rate) each quarter. Recently, they released the latest stats for Q2 2017.
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According to Backblaze, they only added about 600 new hard drives in this Q2, compared to over 10,000 drives in the previous quarter. The reason was that they were retiring old lower density hard drives with newer higher capacity drives (replacing 3TB drives with 8TB drives).
All 17 models in the report are 3.5-inch hard drives, from 3TB up to 8TB in size. Toshiba‘s hard drives did pretty well with 0% failure rate, but there are only 231 drives used, which is relatively small comparing to at least 1,000 drives for other brands. Two of the Western Digital hard drive models also operate without any failure, with the 3TB model having a failure rate of 1.21%. HGST hard drives perform good with a 0.15% to 0.55% failure rate across all models. However, Seagate has two of its 4TB hard drive models going up to over 30%, the ST4000DM001 and ST4000DX000.
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| Photo from Backblaze |
Backblaze also provides cumulative hard drive statistics from April 2013 to June 2017. As we can see, most of the hard drives have an average failure rate of about 1% to 3%. Higher capacity hard drives (5TB to 8TB) have a relatively lower rate.
Source from Backblaze.
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