# BackBlaze's ``Statistical data by manufacturer and model 2022 Q2 version'' that monitors 220,000 HDDs and SSDs is released

We monitor a total of 219,444 HDDs and SSDs in data centers around the world and collect quarterly ``

**HDD / SSD failure rate reports**'' and ``

**backup usage rate / percentage of people who have experienced data loss '**' every year.

**Backblaze**has released the HDD/SSD failure rate report for the second quarter of 2022 (April-June).

**Backblaze Drive Stats for Q2 2022**

**https://www.backblaze.com/blog/backblaze-drive-stats-for-q2-2022/**

Of the 219,444 HDDs and SSDs used by BackBlaze, there are 4,020 boot drives (2,558 SSDs and 1,462 HDDs) and 215,424 data drives. In the report, 215,011 of the data drives are analyzed.

Below is the data for the second quarter of 2022.

**Seagate**'s 'ST14000NM0138' has the highest 'Annual Failure Rate (AFR)' of 5.64%, which is the number of times the drive has failed divided by the number of years the drive has been used, and the average number of months used is 18.8 months , The number of units used was 1571, and the cumulative number of days of use was 142,330 days. Comparing the overall annual failure rate, Seagate has more than the overall average of 1.46% than other manufacturers. On the other hand, there are only four models that maintain an annual failure rate of 0%:

**HGST**'s 'HUH728080ALE600' and Toshiba's 'MD04ABA400V', 'MG07ACA14TEY' and 'MG08ACA16TA'. Following the quarter, the result was that there were no failures at all in the second quarter. Seagate's 'ST6000DX000' had a low failure rate for a long time, but two failures occurred in the second quarter of 2022.

Overall, the combined annual failure rate for all drives has increased from 1.01% in Q2 2021 and 1.22% in Q1 2022 to 1.46%. BackBlaze states that this is due to ``the drives of each manufacturer are aging,'' and expects that the annual failure rate will improve as the old drives are abolished over the next year.

In addition, in the report for the second quarter of 2022, data on the 'lifetime failure rate' recorded from April 20, 2013 for HDD/SDD in operation as of June 30, 2022 is also released. The annual failure rate for all drives is 1.39%, down from 1.45% data as of June 30, 2021. Models with a high failure rate are HGST's 'HUH728080ALE604' at 6.26%, Seagate's 'ST14000NM0138' at 4.86%, Toshiba's 'MG08ACA16TA' at 3.57%, but these are all sample sizes among the same manufacturer. is relatively small.

Therefore, aggregations are shown in the table below, with the minimum number of drive days set to 1 million to ensure a sufficiently large sample size, and the statistical

**confidence interval**set to 0.5% or less. According to this, the annual failure rate is as high as 2.03%, and the average is 1.20%.

The dataset used this time can be confirmed from the following page.

**Backblaze Hard Drive Stats**

**https://www.backblaze.com/b2/hard-drive-test-data.html**

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