IronWolf Pro 24TB: ST24000NT002 Datasheet, Noise, and the 24TB Drives Set Against It

IronWolf Pro 24TB price on Amazon.co.uk

This table lists the 24 TB IronWolf Pro offers we match on Amazon.co.uk, in pounds inc VAT. The table shows 1 listing right now. Lowest price in it: £945.00. Lowest per TB: £39.38/TB.

Read the part number on each row. We have not found a Seagate document that lists ST24000NTZ02, so none of the figures below are claimed for a row that prints it. The figures on this page belong to ST24000NT002 unless a row says otherwise. The Recording column prints a technology only where a document names the row's part number; CMR in an Amazon title is the seller's claim.

In-stock alternatives

None of these is the product this page covers: they are what is in stock on Amazon.co.uk beside it right now. Each row says why it is listed. Check the interface, form factor and part number against your system before buying.

IronWolf Pro 24TB datasheet: ST24000NT002

Seagate's IronWolf Pro data sheet, DS2129.4-2311US, lists ST24000NT002 as the 24 TB standard model, beside ST22000NT001, ST20000NT001, ST18000NT001 and ST16000NT001. Setting the 24 TB against the 16 TB on the same sheet shows what the extra capacity brings, and what it costs.

The 24 TB and 22 TB models carry 512 MB of cache against 256 MB from 20 TB down, and the sustained rate is 285 MB/s from 24 TB to 18 TB against 270 MB/s at 16 TB. Workload, bay rating, MTBF, warranty and noise are the same. The 24 TB pays for its extra capacity at idle: 6.3 W against 6.0 W for the 22 TB, 5.7 W for the 20 TB and 5.0 W for the 18 and 16 TB. It is also the only one of the five with a 5°C minimum ambient operating temperature rather than 0°C.

Seagate's July 2025 IronWolf Pro product manual covers ST24000NT002 together with ST20000NT001, ST16000NT001 and ST12000NT001. It states the workload as a maximum rate of under 550 TB a year, which puts a unit on the sheet's 550. The 5-year limited warranty is the maker's term on its sheet; it does not tell you what a particular Amazon.co.uk seller passes on.

IronWolf Pro 24TB noise: dBA on the sheet, bels in the manual

Seagate publishes two noise figures for ST24000NT002 and they are not on the same scale. The data sheet prints 20 dBA idle and 26 dBA seek. The product manual measures acoustics as overall A-weighted sound power in bels, and gives 2.8 bels typical at idle and 3.2 typical at performance seek, with maxima of 3.0 and 3.4. Do not read 2.8 bels as a louder drive than 20 dBA: they are different measures, and the table below keeps each maker's figures in the unit they printed.

Compare like with like, row against row in the same unit. In bels, Seagate's IronWolf Pro and Exos X24 SATA manuals print identical figures, so on Seagate's own sound-power numbers the NAS drive is no quieter than the enterprise one. WD's HC580 prints 2.0 bels at idle and 3.2 operating. In dBA, WD's WD240KFGX matches the IronWolf Pro's 20 at idle and prints 32 on seek against 26, although WD labels its figure average seek and Seagate typical. Toshiba labels its MG11 figures sound power in dB, measured to ISO 7779; we print them in Toshiba's unit and do not rank them against the other rows.

IronWolf Pro 24TB ST24000NT002 or ST24000NT031

A listing titled IronWolf Pro 24TB can mean either of two Seagate drives. A separate data sheet, DS2129.5, covers a 24 TB IronWolf Pro with HAMR under ST24000NT031. Its figures differ from ST24000NT002 on every row below:

On those sheets the NT002 is faster by 45 MB/s and quieter by 8 dBA at idle and 6 dBA on seek. For a NAS in a room people use, that makes the last three characters of the part number worth checking before you pay.

IronWolf Pro 24TB NAS drive or a 24TB enterprise drive

At 24 TB the IronWolf Pro's ratings sit level with enterprise drives. Here is what each maker's document states for the main 24 TB drives:

• Seagate Exos X24, SATA model ST24000NM002H: a maximum rate of under 550 TB a year in its manual, the same wording as the IronWolf Pro manual, plus a 5-year limited warranty and 2.5 million hours MTBF on its sheet.
• WD Ultrastar DC HC580: workloads of up to 550 TB a year and a 5-year limited warranty.
• Toshiba MG11: 550 TB a year and 2,500,000 hours MTTF/MTBF at 0.35% AFR.
• Synology HAT5320-24T: 550 TB transferred per year and a 5-year warranty.
• WD Red Pro: two 24 TB model numbers, WD240KFGX and WD241KFGX, with the noise figures above.

Set against ST24000NT002's 550, unlimited bays, 5-year warranty and 2,500,000 hours, none of those enterprise ratings is higher. At this capacity the choice comes down to price per TB, what is in stock, and which drives your NAS maker lists for your model. The Synology HAT5300 and WD Red Pro 24TB pages cover two of them in more depth.

The table below holds SATA drives from the Exos, Ultrastar and Toshiba MG lines at exactly 24 TB, new and used together, so check the Condition column. It holds 1 listing right now. Lowest per TB in it: £26.01/TB.

For every 24 TB drive across interfaces, see the 24TB hard drive page; for the rest of the range, see Seagate IronWolf Pro; and for the Exos X24, whose manual prints the same sound-power figures, see Exos X24.

Planning a 24TB array

Seagate specifies ST24000NT002 for an unlimited number of bays, so the size of your NAS is not the limit on paper. At 24 TB per drive, usable capacity depends heavily on the RAID level you choose, so run your bay count through the calculator first.