Seagate ST14000NM0018 14 TB failure rate and reliability

– Not graded: too little data

Backblaze logged 231 drive-years on the Seagate ST14000NM0018 from Q1 2023 to Q3 2026, with 59 in service at the end of that period. In that time 16 drives failed, an annualised failure rate of 6.92%.

That is too little running time to grade: we require 100,000 drive-days, and this model has 84,446. Treat the rate as a rough indication only.

Failures have fallen: 4.00% over the latest 8 quarters against 10.36% before.

Failure rate / year: 6.92%
Average, all drives: 1.52%
Drives in use: 59
Drive-years: 231
Failures: 16
Capacity: 14 TB
Type: HDD
Model number: ST14000NM0018

Failure rate by quarter

Quarter	Drive-days	Failures	Failure rate / year
Q1 2023	4,268	2	17.10%
Q2 2023	5,111	2	14.28%
Q3 2023	5,370	2	13.59%
Q4 2023	6,011	4	24.29%
Q1 2024	6,006	0	0.00%
Q2 2024	6,006	0	0.00%
Q3 2024	5,993	1	6.09%
Q4 2024	5,980	0	0.00%
Q1 2025	5,816	1	6.28%
Q2 2025	5,787	0	0.00%
Q3 2025	5,772	2	12.65%
Q4 2025	5,696	0	0.00%
Q1 2026	5,553	0	0.00%
Q2 2026	5,582	1	6.54%
Q3 2026	5,495	1	6.64%

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

All 14 TB hard drives compared

Grade	Model	Type	Size	Failure rate / year	Drives in use	Drive-years	Failures
B	Western Digital WUH721414ALE6L4	HDD	14 TB	0.71%	8,522	31,964	226
B	Toshiba MG07ACA14TA	HDD	14 TB	1.15%	36,697	140,978	1,620
C	Seagate ST14000NM001G	HDD	14 TB	1.51%	10,413	39,759	600
C	Seagate ST14000NM000J	HDD	14 TB	1.56%	497	835	13
C	Toshiba MG07ACA14TEY	HDD	14 TB	1.70%	965	2,944	50
F	Seagate ST14000NM0138	HDD	14 TB	6.22%	1,159	5,003	311
–	Seagate ST14000NM0018	HDD	14 TB	6.92%	59	231	16
–	Seagate ST14000NM002J	HDD	14 TB	3.37%	24	30	1