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Seagate · Data-centre drive · ST4000NM024B

Seagate Exos 7E10 4TB

Sold for data centres, but underneath it's a standard 3.5in SATA drive and any NAS with a 3.5in bay will take it without complaint.

Capacity
4 TB
Recording
CMR
Speed
7,200 rpm
Warranty
5 years
Workload
550 TB/yr
Failure rate
No failure data

Good for

  • Busy arrays (550 TB a year)
  • Big media libraries
  • RAID, SHR and ZFS rebuilds
  • 5 years' warranty

Not for

  • A desk or bedroom (7,200 rpm is the louder class)

Updated 27 Oct 2026 · Method 2.0

Who the Exos 7E10 4 TB is for

Pick it for raw capacity in a box that lives out of earshot, because 7,200 rpm enterprise drives are built to run flat out all day, every day. Seagate backs it for five years, which is a long time in drive terms. CMR, thankfully. SMR and parity rebuilds don't get on.

Watch out for

At 7,200 rpm it's from the louder, warmer class. Fine in a cupboard, less fun on a desk.

Backblaze doesn't run enough of these for a failure rate we'd publish. On paper it makes 28 dB at idle and 32 dB seeking. Seagate lists 5.16 W at idle and 9.4 W working, which comes to 45 kWh a year for a drive that idles around the clock. A 4-bay box full of these gives 12 TB after one drive's worth of parity.