Seagate IronWolf Pro 18TB
The Seagate IronWolf Pro 18TB costs $700.00 right now, or $38.89/TB. The 24TB is cheaper per terabyte at $35.83/TB. Stepping up to the 20TB costs $19.99 more. The maker rates it for about 1.5 TB read or written a day.
Prices update daily and may differ at the retailer. This page contains affiliate links.
Where to buy the Seagate IronWolf Pro 18TB
Every in-stock offer we track, cheapest first.
- Newegg$700.00
Price history
Lowest in the last 30 days: $700.00. Lowest in 60 days: $700.00.
Show the data as a table
| Date | Lowest price |
|---|---|
| Sep 25, 2026 | $700 |
| Sep 24, 2026 | $700 |
| Sep 23, 2026 | $700 |
| Sep 22, 2026 | $700 |
| Sep 21, 2026 | $700 |
| Sep 20, 2026 | $700 |
| Sep 19, 2026 | $700 |
Lowest in-stock price each day at Newegg and B&H, across every version of this drive we list (including heatsink editions). Lowest point $700.00 on Sep 19; latest $700.00. Amazon prices appear in the offer list but are not charted.
Specifications
Drive
- Capacity
- 18TB
- Form factor
- 3.5"
- Spindle speed
- 7,200 RPM
- Recording
- CMR
- Cache
- 256 MB
- Helium-filled
- Yes
Conventional recording: steady write speed and normal RAID rebuilds.
Rated for
- Use class
- NAS
- Workload
- 550 TB/year
- MTBF
- 2.5 million hours
- Warranty
- 5 years
That is about 1.5 TB read or written a day, far more than a desktop writes.
Noise and power
- Idle noise
- 20 dB
- Seek noise
- 26 dB
- Idle power
- 5 W
- Operating power
- 7.5 W
Identity
- Part number
- ST18000NT001
- Other versions
- ST18000NE000
Quality score
How we score →Scored from recording type (CMR or SMR), workload rating, warranty, measured failure rate where Backblaze covers the model, spindle speed, MTBF and cache. Use class and size filter; they never score.
Value weighs the score against the price, compared with other 18TB hard drives: this drive costs $38.89/TB against a typical $41.42/TB. At a typical price, value equals the score. Cheaper raises it and dearer lowers it, but price counts for less than quality.
A factor we hold no value for scores zero rather than being skipped, so a drive we know little about never outranks a fully documented one. A low score with low confidence means undocumented, not bad. This is a specification index, not a benchmark, and it only compares hard drives with each other.
See every capacity of the Seagate IronWolf Pro on one page, or compare it with every other drive on the Hard Drives table. For what a hard drive gives up against an SSD, see SSD vs HDD.
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