![]() ![]() Toshiba’s 14 TB helium filled currently show the highest annual failure rate, but Backblaze states about that, “the initial annualized failure rate (AFR) is just over 3%, which is similar to the other new models, and we would expect the AFR to drop over time as the drives settle in”. AFR is the percentage of drive failures expected per year. Here’s the lifetime chart from our most recent Q3 2018 report. A more interpretable, but equivalent, metric to MTBF is annualized failure rate (AFR). As many of you know, each quarter Backblaze publishes our Hard Drive Stats report for the hard drives in our data centers. Other drives that appear to be fairly reliable are the various 4 TB HGST variants of which Backblaze has almost 22,000. Similar annualized failure rates as enterprise drives Uses less power and produces less heat Hard Drive Failure Rates. Also the 10 TB Seagate HDDs perform well, Backblaze has almost 1,200 of them, but they have an annual failure rate of only 0.33%. ![]() We also publish the data underlying these reports, so that anyone can reproduce them. ![]() You'll find links to those reports below. In 2016, the annual rate was 1.95% a year later, in 2017, that number dropped to 1.77% and in 2018 it’s the previously mentioned 1.25%. In those years also the average size of the HDD increased from 4.5 TB in 2016, to 7.7 TB last year.Īlthough Backblaze only has 45 of them, none of the Toshiba 5 TB drives has failed since Q2 2016. Since 2013, Backblaze has published statistics and insights based on the hard drives in our data center. The number continues to show a declining trend. Always remember that correlation is not causation.Īnyway, you can check out the Backblaze report by CLICKING HERE.With a failure rate of 1.25%, 2018 was the year with the lowest failure rate since the company started publishing data. It leads to questions that can be tested though. At the end of day, while the information is interesting and shows us what BackBlaze can probably expect from their environment, this is not a scientific test. Some drives are used solely as spares to replace other failed drives, while others may be in servers with higher workloads or heat levels. As such, not every drive subjected to the same load, usage, power, or even environment. ![]() Backblaze is an end user and not a testing facility. 230,921 DRIVE FAILURES 2,963 DRIVE DAYS 79M ANNUALIZED FAILURE RATE 1. A methodology would be established, and the drives would be tested against that methodology. A proper test will try to eliminate as many variables as possible during the testing procedure. Now let’s talk about a caveat about Blackblaze’s report this is a report not a test. It should be noted though that these are fare younger drives average age being between 4.6 and 24.8 months. The 14TB Toshiba MG07ACA14TA has 38,182 drives in service with failure rate of 1.01% at an average age of 26 months.įinally we have only 3 drives from Western Digital in use at Backblaze, and none had a failure rate above 0.36%. However, only 94 drives were in service of which 3 failed. However, it should be noted that Blackblaze had only 94 of the drives in service, with 4 of them failing.Ī similar situation can be seen with the Toshiba 4TB M04ABA400V which posted a failure rate of 3.13% and average age of 91.3 months. HGST wasn’t immune to failure with the 8TB HUH728080ALE604 hitting 5.27% failure rate at an average of 65.5 months. A remarkably noteworthy Seagate drive is the 6TB ST6000DX000 with a 0.68% failure rate, but at an average age of 92.5 months of heavy server usage. Both of these failure rates occurred at a relatively young average age of 24.8 and 37.7 months respectively. The 2022 failure rate report has arrived and it’s an interesting read.Keep in mind I said reporting and not testing, which I’ll address later in this news post.īased on the report, we can see four different manufactures are listed, albeit Seagate has more individual models in service than any other.įor Seagate, the 16TB Seagate ST14000NM0138 had the highest failure rate at 5.70%, with the Seagate 12TB ST1200NM0007 taking second place at 4.75%. It’s also been one of the go-to guides for long term hard drive reliability reporting, and has released the failure rates of its drives in an annual report. Backblaze is is a cloud storage provider that works with some of the top companies in the world. ![]()
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