Statistical data by manufacturer / model of HDD failure rate Backblaze publishes the 1st quarter version of 2016

ByArkangel

I am doing online storage operationBackblazeHowever, we released data on how much HDD used by our company was broken in the first quarter of 2016 by manufacturer / model.

2016 Hard Drive Review: Testing 61, 590 Hard Drives
https://www.backblaze.com/blog/hard-drive-reliability-stats-q1-2016/


Backblaze has been publishing the same kind of data on a regular basis, and as of February 2016 the number of HDDs we are operating was around 56,000 units, but this time we are on a 60,000 scale, Total number of units61,523 unitsTo The number of working days is5.27 8120 days worth, Occurred during the three months from January 1, 2016 to March 31, 2016The number of failures was 266,The failure rate is 1.84%was.

If you arrange the HDD you are operating in order of decreasing,
First place: Seagate "ST 4000 DM000" (capacity 4 TB) 37 thousand 2 9
Second place: HGST "HMS 5 C 4040 ALE 640" (capacity 4 TB) 7075 units
3rd place: HGST "HDS 5C 3030 ALA 630" (capacity 3 TB) 4552 units
4th place: HGST "HDS 722020 ALA 330" (capacity 2 TB) 4264 units
5th place: HGST "HMS 5 C 4040 BLE 640" (capacity 4 TB) 3091 units
.

On the other hand, when sorted by the number of faults,
1st place: Seagate "ST 4000 DM000" (capacity 4TB) 198 cases (2.54%)
Second place: HGST "HDS 722020 ALA 330" (capacity 2 TB) 19 cases (1.74%)
3rd place: HGST "HMS 5 C 4040 ALE 640" (capacity 4 TB) 10 cases (0.57%)
4th place: WDC "WD 30EFRX" (capacity 3TB) 8 cases (3.09%)
5th place: HGST "HDS 5 C 4040 ALE 630" (capacity 4 TB) 7 cases (1.05%)
was.

"ST 4000 DM000" with many units has more failures as much, but in terms of percentage, "HMS 5 C 4040 ALE 640" with the second largest number has a low failure rate. "HMS 5C 4040 BLE 640" in the fifth place, no breakdown occurred in this 3 months. On the other hand, the WD 20 "WD 20EFRX" (capacity 2 TB) which did not enter the 5th place has as few as 133 units operated but 4 troubles are occurring, and it is as high as 12.57% in failure rate was.

However, the "failure rate" of a model with a small number of operating units is not so much relied, for example, Toshiba's "DT01ACA300" (capacity 3 TB) has a failure rate as high as 8.63%, but failures occur at 47 units Since the number of cases is one, it can not be said that it is based on sufficient data.

By the way, the average failure rate recorded this time is 1.84%, it is the lowest number recorded so far.

Because Backblaze has started collecting this data from April 10, 2013, we can compare the figures for 3 years, but for example HGST's "HDS 5C 3030 ALA 630" operates about 4,500 throughout the three years , The failure rate is stable at 0.85% · 0.74% · 0.81%. In the case of "HMS 5 C 4040 BLE 640" of the same HGST, the failure rate is as high as 20.29% in the data of 2014 with 494 units in the data of 2014, but it is steady at 3100 units · 0.48%, 3091 units · 0.38% in the subsequent 2 years Therefore, it is the form that applies to "the failure rate when the number of operating units is small is unreliable".

Looking at the failure rate trends by manufacturer for three years from 2014, 2015, 2016, it looks like this.


Each,
HGST: 1.10% → 1.03% → 1.03%
Seagate: 9.98% → 10.68% → 3.48%
Toshiba: 4.53% → 4.23% → 3.06%
WD: 8.78% → 7.75% → 6.55%
, And all manufacturers are improving compared to 2015 data. In particular, Seagate numbers that had been issuing higher numbers than other manufacturers have improved significantly.