Public
- Public
- Network
- Groups
- Featured
- Popular
- People

We recently covered a study by Secure Data Recovery, an HDD, SSD, and RAID data @ recovery company, of 2,007 defective hard disk drives it received. It found the average time before failure among those drives to be 2 years and 10 months. That seemed like a short life span, but considering the limited sample size and analysis in Secure Data Recovery's report, there was room for skepticism. Today, Backblaze, a backup and cloud storage company with a reputation for detailed HDD and SSD failure analysis, followed up Secure Data Recovery's report with its own research using a much larger data set. Among the 17,155 failed HDDs Backblaze examined, the average age at which the drives failed was 2 years and 6 months. 2 years, 6 months

Download link

We recently covered a study by Secure Data Recovery, an HDD, SSD, and RAID data @ recovery company, of 2,007 defective hard disk drives it received. It found the average time before failure among those drives to be 2 years and 10 months. That seemed like a short life span, but considering the limited sample size and analysis in Secure Data Recovery's report, there was room for skepticism. Today, Backblaze, a backup and cloud storage company with a reputation for detailed HDD and SSD failure analysis, followed up Secure Data Recovery's report with its own research using a much larger data set. Among the 17,155 failed HDDs Backblaze examined, the average age at which the drives failed was 2 years and 6 months. 2 years, 6 months
https://fediscience.org/system/media_attachments/files/110/311/762/111/027/896/original/ad72953077acabef.png

Notices where this attachment appears

Embed this notice
Carl T. Bergstrom (ct_bergstrom@fediscience.org)'s status on Friday, 05-May-2023 09:07:14 JST Carl T. Bergstrom
in reply to

It's a form of selection bias.
The study in question looks at the failure times not of all hard drives, but *of the drives that failed*.
Of those drives, the average failure time was 2.5 years.
@waldok @arstechnica

In conversation Friday, 05-May-2023 09:07:14 JST from fediscience.org permalink