Backblaze hard drive crash statistics in t1 2019

Backblaze is a cloud storage service that has more than 100, 000 installed hard drives from different manufacturers. Every quarter, this service produces a report on the hard drives that have failed in that period.

Backblaze - Statistics of hard drive failures in the first quarter

At the end of the first quarter of 2019, Backblaze had about 104, 325 hard drives installed. In the following table you can see all the hard drives used by this storage service, and the failure rate that each of the models has had.

From the table, it can be seen that there were two models of hard drives that had 0% failures in this period. 99 and 45 respectively.

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A model that is surprising is the 4 TB HGST, in which only 2 of the 2, 557 units that were installed failed. They are followed by the 14 TB Toshiba model in which only 1 of 1, 220 drives failed, and the 6 TB Seagate, with a single hard drive failing out of the 1, 023 installed.

BackBlaze also notes that manufacturers such as Seagate and HGST have decreased their failure rate in the past three years, although Seagate has seen an increase in that failure rate in the past three quarters, which turns on alarms a bit. However, Seagate has managed to lower its failure rate the most, by 50% on average in three years.

On the other hand, Backblaze no longer uses 2TB or 3TB drives on its servers, and in the future, they will also migrate 4TB drives to larger hard drives.

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