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Seagate · Desktop drive · ST8000DM004

Seagate BarraCuda 8TB

A desktop drive for a PC case, rated by Seagate for 55 TB of reads and writes a year.

Capacity
8 TB
Recording
SMR
Speed
5,400 rpm
Warranty
2 years
Workload
55 TB/yr
Failure rate
No failure data

Good for

  • A PC, or a backup copy you plug in now and then

Not for

  • A NAS (Seagate gives it no NAS rating)
  • Heavy daily writes (55 TB a year rating)
  • Parity arrays (RAID 5/6, SHR, RAIDZ)

Updated 27 Oct 2026 · Method 2.0

Is the BarraCuda 8 TB right for you?

Fine as the data drive in a desktop, or a backup copy that sits on a shelf. Either way that's light work for a 55 TB a year rating.

Watch out for

Seagate doesn't rate it for NAS use at all, which rules it out for an array as far as we're concerned. And the recording's SMR, another reason it stays out of arrays.

Backblaze doesn't run enough of these for a failure rate we'd publish. On paper it makes 23 dB at idle and 25 dB seeking. Seagate lists 3.4 W at idle and 5.3 W working, which comes to 30 kWh a year for a drive that idles around the clock.