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Seagate ST12000NM003G 12 TB failure rate and reliability

– Not graded: too little data

Backblaze logged 47 drive-years on the Seagate ST12000NM003G from Q1 2023 to Q3 2026, with 27 in service at the end of that period. In that time 0 drives failed, an annualised failure rate of 0.00%.

That is too little running time to grade: we require 100,000 drive-days, and this model has 17,290. Treat the rate as a rough indication only.

Failure rate / year
0.00%
Average, all drives
1.52%
Drives in use
27
Drive-years
47
Failures
0
Capacity
12 TB
Type
HDD
Model number
ST12000NM003G

Failure rate by quarter

QuarterDrive-daysFailuresFailure rate / year
Q1 20236400.00%
Q2 202317000.00%
Q3 202341200.00%
Q4 202346000.00%
Q1 202445500.00%
Q2 202445500.00%
Q3 202445900.00%
Q4 202448600.00%
Q1 202584000.00%
Q2 20251,45600.00%
Q3 20251,83500.00%
Q4 20252,56800.00%
Q1 20262,51200.00%
Q2 20262,54500.00%
Q3 20262,57300.00%

Single quarters with few drive-days swing widely; the overall figure above is the dependable one.

All 12 TB hard drives compared

GradeModelTypeSizeFailure rate / yearDrives in useDrive-yearsFailures
B HGST HUH721212ALE600 HDD 12 TB 0.90% 2,590 9,719 87
B Seagate ST12000NM000J HDD 12 TB 0.97% 1,067 2,271 22
B Seagate ST12000NM001G HDD 12 TB 1.13% 13,006 49,098 553
D HGST HUH721212ALE604 HDD 12 TB 2.40% 12,885 49,399 1,184
D Seagate ST12000NM0008 HDD 12 TB 2.78% 17,915 71,422 1,986
F HGST HUH721212ALN604 HDD 12 TB 4.60% 9,328 37,997 1,747
F Seagate ST12000NM0007 HDD 12 TB 7.88% 931 4,021 317
– Seagate ST12000NM003G HDD 12 TB 0.00% 27 47 0