BackBlaze releases 'Statistical data of SSD failure rate by manufacturer and model 2021 version' which SSD is fragile
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BackBlaze, which publishes statistical data on the failure rate of HDDs used in its own data centers for a long time, has newly started publishing statistical data on SSDs.
The SSD Edition: 2021 Drive Stats Review
https://www.backblaze.com/blog/ssd-edition-2021-drive-stats-review/
According to BackBlaze, SSD will be used as a boot drive for storage servers from the fourth quarter of 2018, and since then, SSD has been used for all new servers and servers with HDD boot drive failures. As of December 31, 2021, BackBlaze is operating 2200 SSDs.
The following is the data for 3 years from 2019 to 2021. In 2019, the cumulative number of operating days was 42,522, and the failure rate was 0.86%. In 2020, the number of operating days increased to 281,926, while the failure rate decreased slightly to 0.78%. In 2021, it will operate 626,374 days and the failure rate will be 1.22%. What stands out is the high failure rate of the Crucial 'CT250MX500SSD1' and Seagate 'ZA2000CM10002' introduced in 2021, but the number of installations is not large, CT250MX500SSD1 is installed in 2 out of 20 units, and ZA2000CM10002 is installed. It is said that this number is due to the failure of one of the four units.
Below is a detailed version of the 2021 information. Of the 2200 SSDs in operation, 1090 are Seagate 'ZA250CM10003'. The number of failures is eight, and the failure rate is 1.06%.
The failure rate is shown by quarter (blue line) and cumulative (red line). If you follow the failure rate only by quarterly numbers, you will see numbers exceeding 3% in multiple quarters and you are thinking about whether to use it as a boot drive, but if you look at the cumulative total, BackBlaze thinks it as a threshold value. There is no problem because it is below 2%.
BackBlaze will continue to publish HDD statistical reports four times a year, while also publishing SSD versions twice a year.
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