Skip to content

Seagate · Data-centre drive · ST24000NM001K

Seagate Exos M 24TB

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
24 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

Is the Exos M 24 TB right for you?

It's at home in a rack or a garage, where 7,200 rpm of spinning rust can whirr away all day without bothering anyone. 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.

There's no Backblaze data worth quoting here. On paper it makes 28 dB at idle and 32 dB seeking. Seagate lists 6.9 W at idle, which comes to 60 kWh a year for a drive that idles around the clock. Four of them in SHR or RAID 5 give 72 TB usable, or 65.5 TB once Windows has done its binary maths on it.