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. hard drive and solid-state drive failure report 6 Backblaze, the cloud backup provider, has released its latest drive reliability numbers. 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.Here are some further observations, made by Backblaze: 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. That helped us end 2016 with 3TB drives being the smallest density drives in our data centers. Big Drives Rule We increased storage density by moving to higher-capacity drives. That’s down from 2.47 in 2015 and well below the 6.39 failure rate for 2014. The highest annualized failure rate among the bunch is 2.01 percent, which is attached to Seagate's 12TB ST12000NM007 HDD. The overall hard drive failure rate for 2016 was 1.95.
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