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Seagate ST8000NM000A 8 TB failure rate and reliability

A Grade A: Excellent

Backblaze logged 806 drive-years on the Seagate ST8000NM000A from Q1 2023 to Q3 2026, with 229 in service at the end of that period. In that time 3 drives failed, an annualised failure rate of 0.37%.

That is 75% lower than the 1.52% average across every drive in the same data, which earns it grade A (excellent).

Among the 5 graded 8 TB hard drives it ranks 1 of 5 for reliability.

Failure rate / year

0.37%

Average, all drives

1.52%

Drives in use

229

Drive-years

806

Failures

3

Capacity

8 TB

Type

HDD

Model number

ST8000NM000A

Failure rate by quarter

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

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