![]() However, it remains to be seen how the faster storage medium fares in the future, especially when it comes to endurance (TBW) and long-term reliability.Īs for lifetime figures of data HDDs active until Q2 2021, Backblaze published the following table, alongside the best performing models with the lowest lifetime AFR percentage arranged in decreasing order of drive size/capacity. With HDDs failing as they age and slowly adding to their lifetime AFR percentage, Backblaze recorded a slight dip for SSD failures this year, coming in at 0.79 percent over last year's 0.84 percent AFR. Now, the latter's lifetime AFR value comes in at just under twice that of SSDs. This evaluation drastically reduced the AFR difference between the two storage mediums, which in Q1 2021 stood at 0.65 percent for SSDs and 6.04 percent for HDDs. Meanwhile, for a more accurate comparison of boot drives that are made up of older HDDs and relatively newer SSDs, Backblaze first looked at the active drives' figures from Q4 2020 and then a lifetime snapshot from Q4 2015 for boot HDDs, which is when their attributes (drive count, average age) were the closest to the SSDs. The AFR for these data drives rose to 1.01 percent, which Backblaze notes is a jump from 0.85 percent over the previous quarter and has also ended the downward AFR trend observed over the past year. The three models with only one unit going bust this quarter include Toshiba's 4TB and 16TB drives, the latter of which recorded its first failure, alongside one HGST 8TB unit. The other two being HGST's 12TB and WD's 16TB drives. Backblaze’s 2020 Hard Drive Reliability Statistics. In spite of everything else that happened last year, hard drives became more reliable. Interestingly, the company's 6TB HDD was among the three HDD models that recorded zero failures in Backblaze's Q2 2021 reliability report. Originally published at: Backblaze’s 2020 Hard Drive Reliability Statistics - TidBITS Backblaze has again released annual hard drive statistics that report on the company’s hard drive reliability stats for 2020. In terms of quarterly failures, Seagate's 4TB HDD led the pack with 91 units out of a total of 439 failing drives. Backblaze also drew a comparison between its SSD and HDD boot drives by looking into past data for a more accurate insight into their failure rates. The company noted a slight increase in quarterly AFR across its data drives, which were expectedly led by a couple of Seagate and Toshiba models that have one of the highest drive counts and average age across all monitored HDDs. The 4TB HGST (model: HMS5C4040ALE640) has 274,923 drive days with no failures this quarter.Bottom line: Backblaze has published the latest reliability figures for its data drives (HDDs) and boot drives (SSDs and HDDs) for Q2 2021. Next quarter will give us a better picture. The 14TB Seagate model (ST14000NM001G) has 21,120 drive days with 2,400 drives, but they have only been operational for less than one month. For our evaluation we remove from consideration those drives that were used for testing purposes and those drive models for which we did not have at least 60 drives (see why below). The 4TB Toshiba model (MD04ABA400V) has only 9,108 drive days, but they have been putting up zeros for seven quarters straight. Hard Drive Failure Stats for Q1 2020 At the end of Q1 2020, Backblaze was using 129,959 hard drives to store customer data. According to Backblaze’s data, the company added 39,792 hard drives to its collection 2020, bringing the total to 165,530 drives. Still, I wouldn't try to draw any conclusions yet, but a quarter or two more like this and we might have something to say. The 16TB Seagate model (ST16000NM001G) has 5,428 drive days which is low, but they've been around for nearly 10 months on average. There were no out of the box failures which is a good start, but that's all you can say. The 18TB Seagate model (ST18000NM000J) has 300 drive days and they've been in service for about 12 days. That's great, but when we dig in a little we get different stories for each of the drives. There are several models with zero drive failures in the quarter. This review looks at the Q3 2020 and lifetime hard drive failure rates of the data drive models currently in operation in our data centers and provides a handful of insights and observations along the way. ![]() Of that number, there were 2,780 boot drives and 150,947 data drives. This leaves us with 162,299 hard drives in 2020, as listed below. For our evaluation, we remove from consideration 231 drives which were used for testing purposes and those drive models for which we did not have at least 60 drives. Backblaze's Q3 2020 hard drive stats: As of September 30, 2020, Backblaze had 153,727 spinning hard drives in our cloud storage ecosystem spread across four data centers. According to these data, the annual failure rate is 1.07, and according to the company it is the lowest they have had since 2013, and is in fact significantly. 2020 Hard Drive Failure Rates At the end of 2020, Backblaze was monitoring 162,530 hard drives used to store data. ![]()
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