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Seagate · NAS Pro drive · ST22000NT001

Seagate IronWolf Pro 22TB

A NAS drive for bigger boxes. Seagate doesn't cap the bay count, and it's rated for 550 TB of reads and writes a year.

Capacity
22 TB
Recording
CMR
Speed
7,200 rpm
Warranty
5 years
Workload
550 TB/yr
Rated for
Any bay count
Failure rate
No failure data

Good for

  • Any size of NAS
  • Busy arrays (550 TB a year)
  • 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 IronWolf Pro 22 TB right for you?

Go for it if you're building something bigger than a 4-bay box. It also earns its keep on a busy pool where scrubs and rebuilds never let up, because the 550 TB a year workload rating is there for exactly that. 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

It's a 7,200 rpm drive and you'll hear it working.

There's no Backblaze data worth quoting here. Seagate's datasheet puts it at 20 dB idle and 26 dB seeking. Power draw is 6 W idle and 7.9 W working on Seagate's figures, or 53 kWh a year if it spends the whole year idling. Put four in RAID 5 and you'll have 66 TB to fill (Windows will call it 60.0 TB).