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Seagate ST500LM030 500 GB failure rate and reliability

F Grade F: Poor

Backblaze logged 673 drive-years on the Seagate ST500LM030 from Q1 2023 to Q3 2026, with 144 in service at the end of that period. In that time 34 drives failed, an annualised failure rate of 5.05%.

That is 233% higher than the 1.52% average across every drive in the same data, which earns it grade F (poor).

Among the 5 graded 500 GB hard drives it ranks 2 of 5 for reliability.

Failures have fallen: 0.92% over the latest 8 quarters against 8.96% before.

Failure rate / year

5.05%

Average, all drives

1.52%

Drives in use

144

Drive-years

673

Failures

34

Capacity

500 GB

Type

HDD

Model number

ST500LM030

Failure rate by quarter

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

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