In searching for the Toshiba 16TB drive, model: MG08ACA16TEY, you may find model: MG08ACA16TE for much less ($399.00 or less).Further investigation may be required to ensure you are purchasing a new drive versus a refurbished drive marked as new. Status is based on what is stated on the website.The WDC 16TB drive, model: WUH721816ALE6L0, does not appear to be available in the U.S.Let’s start with the HDD boot drives that were active at the end of Q4 2020. We found that at the end of Q4 2015 the attributes were the closest. To create a more accurate comparison, we took the HDD boot drives that were in use at the end of Q4 2020 and went back in time to see where their average age and cumulative drive days would be similar to those same attributes for the SDDs at the end of Q4 2020. As a reminder, the HDD and SSD boot drives perform the same functions which include booting the storage servers and performing reads, writes, and deletes of daily log files and other temporary files. The average age of the HDD drives was 49.63 months while the SSDs average age was 12.66 months. As we stated at the time, a numbers-to-numbers comparison was suspect as each type of drive was at a different point in its life cycle. In our Q1 2021 report, we took an initial look at comparing our HDD and SSD boot drives, both for Q1 and lifetime timeframes. The increase is within our confidence interval, but bears watching going forward. This jump ended a downward trend over the past year. The quarterly AFR for all the drives jumped up to 1.01% from 0.85% in Q1 2021 and 0.81% one year ago in Q2 2020. We are actively working with Dell to determine the root cause of this elevated failure rate and expect to follow up on this topic in the next quarterly drive stats report.
These Seagate drives along with 14TB Toshiba drives (MG07ACA14TEY) were installed in Dell storage servers deployed in our U.S. In this case, one less failure during the quarter would result in an AFR of 0% and one more failure would result in an AFR of over 8.1%. Drive models with low drive days in a given period are subject to wide swings in the AFR. The 4TB Toshiba (MD04ABA400V) had an AFR of 4.07% for Q2 2021, but as noted above, that was with one drive failure.Two drive models had an annualized failure rate (AFR) above 4%, let’s take a closer look. In the middle of the age spectrum with an average of 40.7 months, the 8TB HGST drives (HUH728080ALE600) also had just one failure this past quarter.At the other end of the age spectrum, one of our 4TB Toshiba (MD04ABA400V) drives finally failed, the first failure since Q4 of 2018.On the young side, with an average age of five months, the 16TB Toshiba (MG08ACA16TEY) had its first drive failure out of 1,430 drives installed.Three drive models recorded one drive failure during the quarter. 16TB Western Digital (WUH721816ALE6L0): These drives have only been installed for three months, but no failures in 624 drives is a great start.After recording a quarterly high of five failures last quarter, they are back on track with zero failures this quarter and a lifetime failure rate of 0.41%. 12TB HGST (HUH721212ALE600): These drives reside in our Dell storage servers in our Amsterdam data center.The low number of drives (886) and drive days (80,626) means there is some variability in the failure rate, but the lifetime failure rate of 0.92% is solid. 6TB Seagate (ST6000DX000): The average age of these drives is over six years (74 months) and with one failure over the last year, this drive is aging quite well.
Three drive models recorded zero failures during Q2, let’s take a look at each.
#BACKBLAZE HARD DRIVE STATS DOWNLOAD#
The data for all of the drives in our data centers, including the 231 drives not included in the list above, is available for download on the Hard Drive Test Data webpage. Notes and Observations on the Q2 2021 Stats
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