Backblaze hard drive failure rates9/9/2023 As they increase, annual failure rates on the drive also climb. One SMART stat that Backblaze found correlated with impending hard drive failures is 187, a stat that indicates the number of read errors that occur on a hard drive. It found that five SMART stats do predict drive failures, according to Backblaze CEO Gleb Budman. It has released that data in company blogs, highlighting which manufacturer's drives failed more often than others.īackblaze's most recent study, the results of which were also published in a company blog post, delved into SMART alerts based on the 40,000 or so hard drives the company has in its data center. Vendors can also use SMART data to analyze issues across drive lines.įor several years, Backblaze has collected data on hard drive failures. It does not store any personal data.Due to a lack of industrywide SMART software and hardware standards, SMART data cannot be exchanged between vendor products. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. The most notable model in this regard has proven to be the Seagate Barracuda 4TB (ST4000DM000) – it has accumulated 73 million days in the business with an AFR of 2.54%. At the end of their lifetime, the manufacturer’s discs have an AFR value of 1.39%, compared to 1.40% last year. Seagates tend to be cheaper and still cost effective with absolute failure rates for backblaze. Of all the manufacturers, Seagate solutions showed the most failures and Toshiba the fewest. In comparison, 16TB drives at 13.3 months show only 0.86% of failures.Ĭomparison of annual failure rate by manufacturer with Q1. The correlation between drive age and probability of failure is supported by statistics: 4TB drives with an average age of 81.1 months have a 1.70% failure rate, while 8GB models with a lifetime of 67.8 months have a failure rate of 1.36% have. Almost half, 44.5% of all drive failures in 2022 were 4TB, 6TB, 8TB and 10TB models – they fail more often because they last longer, even though they are accounted for only 28.7% of the working days.Ĭomparison of annual failure rates by drive size The highest AFR rates fell on the HGST Ultrastar He8 8TB (HUH728080ALE604) and Seagate Exos X14 14TB (ST14000NM0138) models – 5.27% and 5.70%, respectively. Backblaze attributed this to the age of the drives – as expected, drives are more prone to failure as they age. The average annual default rate (AFR) has increased over the past three years: in 2020 it was 0.93%, in 2021 – 1.10% and 2022 – 1.37%. Furthermore, these HDDs were mainly used as replacements for other failed 8TB drives. The “star” of Backblaze was the Seagate Exos 8 TB model (ST8000NM000A), which did not show a single failure in 2022, but there is one nuance: only 79 units of this model are in service, while some others are represented by tens of thousands. A total of 230,921 disks remained for analysis, which can be considered an excellent sample. The report concerns only the latter, although 388 instances had to be excluded from their count that either belonged to test models or represented a sample of fewer than 60 units for the model. As of December 2022, Backblaze servers had 235,608 hard drives, of which 4,299 were boot drives and 231,309 were data drives.
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