If there is a takeaway to be had, it's the same as always-be sure to back up your data, and keep multiple backups of the especially important stuff. The HGST/Hitachi 4 TB models delivered sub 1.0 percent failure rates for each of the three years.That’s impressive, but with only 45 drives in use for each model, not statistically useful. The Toshiba 5TB model and the HGST 8TB model had zero failures over the last year.While the remaining 180 WDC 3TB drives are performing very well, decreasing the data set that dramatically makes trend analysis suspect. While it looks like the failure rates for the 3TB WDC drives have also decreased, you’ll notice that we migrated out nearly 1,000 of these WDC drives in 2017.The failure rates for both of the 6TB models, Seagate and WDC, have decreased over the years while the number of drives has stayed fairly consistent from year to year. The last time we checked Backblazes data was just last quarter 2017, since then Backblaze has added 4,921 new drives and retired 4,286 old drives as they.
Here are some further observations, made by Backblaze: The latest lifetime hard drive failure data published by Backblaze, which covers the period from April 2013 until June 2019, showed that their 8TB and 10TB hard.
It's a limited sample set, but out of the five different 8TB or larger HDD models totaling 32,767 HDDs in all, the average failure rate is 1.07 percent.Ĭompare that with an average failure rate of 6.35 percent for the eight 4TB models, or 3.1 percent if we remove the ST4000DM005 and its 29.08 percent failure rate from the equation.
All of the other 8TB and higher models have failure rates ranging from 0 percent to 1.22 percent. The highest annualized failure rate among the bunch is 2.01 percent, which is attached to Seagate's 12TB ST12000NM007 HDD.
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