Backblaze, long a champion of home-grown hardware, succumbs to the lure of commodity serversįor this reason, the company has drawn up another table comprising drives which have a minimum drive days value of one million and are larger than 8TB in capacity.
Back up for a minute – Backblaze HD reliability stats show oldies can be goodies For its latest quarterly report on hard drive reliability, Backblaze notes four models that stood out with zero drive failures through the first three months of 2021.Toshiba reveals 30TB disk drive to arrive by 2024.Backblaze report finds SSDs as reliable as HDDs.However, Backblaze cautions that the number of “drive days” (the number of days all the drives of a specific model were operational during the defined period) for these is on the low side, leading to a wide gap between the low and high confidence interval values and therefore lower confidence in those AFR figures. The latter post is purely about SSDs, while the 2021 report was about hard drives.
Three drives can be picked out from the table with the highest failure rates, and these are an 8TB HGST model (HUH728080ALE604) at 6.26 percent a Seagate 14TB model (ST14000NM0138) at 4.86 percent and Toshiba’s 16TB (MG08ACA16TA) with 3.57 percent. Backblaze Drive Status-Report 2021 On February 1, 2022, Backblaze published its Backblaze Drive Stats for 2021 report, and then followed it up with a complementary blog post, The SSD Edition: 2021 Drive Stats Review, on March 3, 2022. But, as with the 4TB Toshiba model, these drives have very wide confidence interval gaps because of a relatively limited number of data points.īackblaze found that the lifetime AFR across all these drives is 1.39 percent, which is the same as during the previous quarter and down from the 1.45 percent found during the same quarter in 2021. Other drives that Backblaze reveals as having zero failures during Q2 are an 8TB HGST model (HUH728080ALE604), as well as some 14TB and 16TB Toshiba drives (MG07ACA14TEY and MG08ACA16TA respectively). The AFR for these drives is just 0.79 percent, but this comes with the caveat that the lifetime confidence interval gap for them is 1.3 percent, which means Backblaze is lacking enough data to be confident of the true AFR. However, the next to oldest drives in Backblaze’s portfolio are 4TB Toshiba drives (model MD04ABA400V) which have been in service for an average 85.3 months and these recorded zero failures during Q2. “At some point in the future we can expect these drives will be cycled out, but with their lifetime AFR at just 0.87 percent, they are not first in line,” said Backblaze’s principal cloud storage evangelist Andy Klein.
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