Cloud storage service provider Backblaze just released a hard disk failure rate report for the third quarter of 2021. It can be seen that Seagate’s overall performance was at the bottom of the quarter ending in September.Considering that Backblaze accumulates the annualized failure rate (AFR) of tens of thousands of mechanical hard drives every quarter, this report also has certain reference significance for personal storage users.
As of the end of September 2021, Backblaze is monitoring 190,826 hard drives for data storage, and each model included in the statistics has at least 60.
Backblaze employee Andy Klein shared relevant data in a blog post. It is known that the only drive that set a zero failure record in the second quarter of 2021 was the 12TB model (HUH721212ALE600) from HGST.
This drive was used by Backblaze in the Amsterdam data centerDellOn the storage server.
It should be pointed out that although the actual percentage values of AFR seem to be very low, the differences between different hard drive models are still quite significant-for example, the annualized failure rate of the two SKUs of Seagate 4TB / 14TB is extremely high.
Among them, Seagate ST14000NM0138 (14TB) performed at the bottom, with an AFR of 4.86%. However, due to the outrageous data and the low sample size (26 counts in the quarter), both Seagate and Dell are investigating potential causes.
If you look at the overall AFR of each brand, Seagate’s is 1.62%,ToshibaIt was 1.134%, and Riyu (now WD) was 0.445%. The best performance of the season was 0.355% of Western Digital.
Finally, Backblaze also shared the solid state drive (SSD) The AFR data of the drive and compare it with the overall AFR curve of the hard disk (HDD).
In order to understand whether the AFR of SSDs will converge with HDDs over time, Backblaze has collected four quarters of reference data. It can be seen that the curves of the two types of drives are very similar (even if SSDs are generally lower).