This is not a like-for-like capacity comparison. IronWolf Pro 32TB gives six more raw terabytes per bay than WD Red Pro 26TB. The question is whether that density is worth the Seagate price premium, or whether the WD ecosystem and lower acquisition cost win.
Both lines are NAS-positioned CMR choices with strong workload ratings and five-year warranty positioning. Capacity economics, compatibility lists and brand preference decide the purchase.
Choose IronWolf Pro 32TB when bays are the scarce resource and you need the most usable capacity per NAS slot. Choose WD Red Pro 26TB when WD compatibility, ecosystem preference or live price per usable TB outweighs the six-terabyte-per-bay density gap.
Use this as the procurement-level screen before looking at live price rows.
| Decision point | IronWolf Pro 32TB | WD Red Pro 26TB |
|---|---|---|
| Capacity | 32TB | 26TB |
| Raw delta | +6TB per bay | Baseline |
| Recording | CMR | CMR |
| Interface | SATA 6Gb/s | SATA 6Gb/s |
| Workload / warranty | 550TB/year / 5 years | 550TB/year / 5 years |
| Best use | Maximum-density Seagate NAS | WD-preferred NAS and lower-cost capacity |
| Main limitation | Can carry a top-capacity premium | Gives up substantial slot density |
| Decision metric | Cost per protected TB | Cost per protected TB |
This shows the capacity delta only. The financial answer comes from the live $/TB rows on the page.
| Drive count | IronWolf Pro 32TB raw | WD Red Pro 26TB raw | Raw delta |
|---|---|---|---|
| 4 bays | 128TB | 104TB | 24TB |
| 6 bays | 192TB | 156TB | 36TB |
| 8 bays | 256TB | 208TB | 48TB |
| 12 bays | 384TB | 312TB | 72TB |
One exact live row is currently matched for WD260KFGX, but both sides of ST32000NT000 / WD260KFGX are not simultaneously in exact live stock. Relevant live alternatives are shown below for pricing context.
Live prices · updated every 4-5 hours · last checked 1 hr ago · one side may be unavailable in exact live stock
| Model | Capacity | Recording | RPM | Workload TB/yr | Warranty | $/TB | Price | |
|---|---|---|---|---|---|---|---|---|
| 26TB WD260KFGX | 26TB | CMR | 7,200 | — | — | $43.25 | $1124 | Buy |
| 24TB WD241KFGX | 24TB | CMR | 7,200 | 550 | 5 yr | $44.17 | $1060 | Buy |
Workload rating is recorded per part number from Seagate's datasheet for that exact model, not blanketed across the line — two drives of the same capacity can differ because they are different generations. A dash means the figure is not stated for that listing. Recording technology comes from the manufacturer's published CMR/SMR list; a model absent from that list is shown as UNVERIFIED rather than guessed. Rows priced above 3× this line's in-stock median are flagged and excluded from the winner callout and from every median we compute.
This table is computed from live DatacenterDisk rows when an exact in-stock match exists. It is intentionally blank for unavailable models rather than filled with stale prices.
| Live model | Drive price | $/TB | 100TB raw target | 500TB raw target | 1PB raw target |
|---|---|---|---|---|---|
| WD260KFGX | $1124 | $43.25 | 4 drives / $4498 | 20 drives / $22490 | 39 drives / $43855 |
Six terabytes per bay compounds quickly. In four bays, IronWolf Pro 32TB gives 24TB more raw capacity. In eight bays, 48TB. In twelve bays, 72TB. In dual parity, the usable difference is about 12TB, 36TB and 60TB before overhead.
That makes the Seagate drive attractive in fixed-bay NAS systems. It is much less persuasive in a chassis where adding bays is cheap.
Many NAS buyers prefer to stay inside one drive ecosystem because compatibility lists, vendor support and fleet spares become simpler. IronWolf Pro brings Seagate's IronWolf Health Management story. Red Pro brings WD's NAS line and a broad installed base.
Neither preference is irrational. The wrong move is paying for a brand preference without checking the exact model and live price gap.
A 32TB drive can have a higher sticker price and still be cheaper per usable terabyte in a bay-limited array. Conversely, a heavily discounted 26TB Red Pro can undercut the density advantage enough to win.
Use today's live rows, then multiply by the number of drives required to reach your protected capacity target. The break-even point is different for a 4-bay NAS, an 8-bay NAS and a 12-bay rack unit.
Six terabytes per drive. Across eight bays that is 48TB raw before parity and overhead.
Yes. The IronWolf Pro 32TB data sheet lists CMR, and WD's Red Pro documentation positions WD260KFGX in the CMR Red Pro line.
No. Price per TB is the first screen, not the whole decision. Match recording method, interface, bay count, firmware support, warranty position and rebuild risk before accepting the cheapest row.
Specification claims on this page were checked against the pages below on 1 September 2026. Where a widely-repeated figure did not survive that check, we report what the source says now and say so in the text rather than repeating the familiar number.