WD’s Red Pro and Seagate’s IronWolf Pro are each maker’s NAS hard drive for bigger, busier multi-bay systems [1][5]. On their spec sheets they match on most of the headline numbers: 7200 RPM, CMR recording, a 550TB-a-year workload rating, unlimited bays and a 5-year limited warranty [1][2][5][6]. So the choice comes down to the smaller print: what each maker offers when data is lost, which figures apply to the 8TB model, and price.

Scope: one 8TB drive from each maker, both linked to the maker’s own US store. Choosing between WD’s own Red Plus and Red Pro instead? See WD Red Plus vs WD Red Pro.

Which to pick

• Pick the Seagate IronWolf Pro if you want data recovery included with the drive. Our pick because: Seagate bundles three years of its Rescue Data Recovery Services with the IronWolf Pro [5][6], which its Rescue page describes as “One in-lab data recovery attempt” [8]. WD offers a paid recovery plan instead [1]. It’s also the lower price tier of the two.
• Pick the WD Red Pro if your NAS already runs WD Red Pro drives, or your NAS maker’s compatibility list names it and not the IronWolf Pro. Our pick because: the two match on workload, bays, spindle speed and warranty term [1][2][5][6], so in our view fitting what you already run matters more than any one spec. WD’s datasheet also lists lower average power for its 8TB models [2][6]. It’s the higher price tier.

How we chose: research-based. We used WD’s and Seagate’s US store pages, datasheets, Seagate’s product manual, and both makers’ warranty and data recovery pages (cited below). We have not physically tested these drives. All performance and reliability figures are the makers’ own.

Side-by-side (8TB)

WD’s store lists the 8TB Red Pro under model WD8006FFBX, which doesn’t appear in the Red Pro datasheet; that datasheet’s 8TB models are WD8005FFBX and WD8003FFBX [1][2]. Figures that come only from that datasheet are labelled “datasheet 8TB models”.

	WD Red Pro 8TB (WD8006FFBX)	Seagate IronWolf Pro 8TB (ST8000NT001)
Recording / interface	CMR, SATA [1]; 6Gb/s (datasheet 8TB models) [2]	CMR, SATA 6Gb/s [6]
Spindle speed	7200 RPM [1][2]	7200 RPM [6][7]
Cache	256MB [1]	256MB [6][7]
Workload rating	550TB/year [1][2]	550TB/year [5][6]
NAS bays (maker)	Unlimited [1][2]	Unlimited [5][6]
RAID error handling	Time-Limited Error Recovery (TLER) [1]	Time-limited error recovery (TLER) [5][6]
RV sensors	Yes (datasheet 8TB models) [2]	Yes [5][6]
Transfer rate (maker figure)	Up to 235MB/s (store page) [1]; 267MB/s (WD8005FFBX) / 235MB/s (WD8003FFBX) internal, max (datasheet 8TB models) [2]	255MB/s max sustained, outer diameter [6][7]
MTBF (maker rating)	Conflicting: up to 2.5 million hours, line-wide (store page) [1] / 2,000,000 hours (datasheet 8TB models) [2]	Conflicting: 2.5M hours (product page) [5] / 2,000,000 hours (datasheet 8TB column and product manual) [6][7]
Non-recoverable read errors	<1 in 10^15 bits (datasheet 8TB models) [2]	1 per 10^15 bits [6]
Average power, operating	6.9 W (WD8005FFBX) / 8.8 W (WD8003FFBX) read/write (datasheet 8TB models) [2]	10.1 W [6]
Seek noise (maker figure)	36 dBA average (datasheet 8TB models) [2]	30 dBA typical [6]
Capacities in the line	2TB to 26TB (store page copy and datasheet) [1][2]; the store’s capacity menu lists 4TB to 26TB [1]	Conflicting: 2TB to 32TB (product page) [5] / 2TB to 24TB (datasheet) [6]
Limited warranty	5 years [1][2][3]	5 years [5][6]
Data recovery	None included; WD’s store sells an optional Western Digital Data Recovery Plan (Ontrack) for a fee [1]	Included for 3 years (Rescue Data Recovery Services); not offered in every country [5][6][8]
Price tier	Premium	Budget

Price tiers are relative to the products in this article. Each tier is based on the maker’s own US store listing, checked October 22, 2026 (ET). We don’t list street or retail prices because they change. Check the current price before you buy.

Matched on the headline ratings

Both makers rate their pro drive for 550TB of data a year and for any number of bays, with RV sensors and TLER for RAID [1][2][5][6]. Both spin at 7200 RPM with 256MB of cache at 8TB [1][6]. Our take: if you’re choosing on spec-sheet ratings alone, neither one wins at this capacity.

Speed and power figures differ, but read them with care. WD quotes an internal transfer rate, while Seagate quotes a maximum sustained rate at the platter’s outer diameter [2][6]. And WD’s 8TB power and noise figures come from datasheet models that aren’t the WD8006FFBX it sells [1][2].

MTBF: check which number applies

Each maker’s headline figure is 2.5 million hours [1][5]. At 8TB, though, each maker’s own datasheet lists 2,000,000 hours [2][6], and Seagate’s product manual gives the same figure with a 0.44% annualized failure rate [7]. The manual adds that “The AFR (MTBF) is a population statistic not relevant to individual units” [7]. Our take: treat MTBF as a fleet statistic, not a lifespan, and keep a backup either way.

Data recovery: the real difference

Seagate includes three years of Rescue Data Recovery Services with the IronWolf Pro [5][6]. Its Rescue page lists one in-lab recovery attempt, with recovered data returned on an encrypted drive if the attempt succeeds [8]. Seagate’s data recovery terms add limits that matter in a NAS: for a RAID array you must send every drive from the array, and “Seagate will only attempt data recovery from Seagate drives” [9]. The same terms make no promise that a recovery will succeed [9].

WD’s store page offers a paid Western Digital Data Recovery Plan, run with Ontrack, alongside the drive [1]. A footnote on the same page says “Use of an internal HDD in a RAID configuration or device will void the Data Recovery Plan purchased with the product.” [1]

Our take: for drives that will sit in a RAID array, Seagate’s included service is the only one of the two that covers RAID recovery: WD’s store page says RAID use voids its paid plan [1], while Seagate’s terms cover RAID if you send every drive and only recover from Seagate drives [9]. By those terms it fits best when every drive in the array is a Seagate.

Warranty: what the terms say

Both drives carry a 5-year limited warranty: WD lists it on the store page and datasheet, and its warranty-periods table gives 5 years for Red Pro drives bought in the Americas [1][2][3]; Seagate lists it on the product page and datasheet [5][6]. Neither warranty pays for lost data. WD’s warranty policy for its HDDs excludes loss of data and the cost of recovering lost data [4]. Seagate’s warranty statements say they don’t cover data loss or data recovery costs [10][11][12].

Both makers require that you buy from an authorized seller to get warranty coverage [4][10][11][12]. Seagate has three warranty statements (consumer, channel and Business Storage/NAS), and the pages we checked don’t say which one covers a bare IronWolf Pro. The consumer and channel statements both exclude problems caused by commercial use. The Business Storage/NAS statement doesn’t list that exclusion, but, like the consumer statement, it says only consumers who buy from an authorized seller can get coverage [10][11][12]. Our take: if you’re buying for a business, ask Seagate which statement applies before you buy.

The bottom line

Our take: the IronWolf Pro gives you included data recovery at the lower tier [5][8]. The WD Red Pro makes more sense when it matches your existing array or your NAS maker’s list, at the higher tier [1]. Neither replaces a backup.

Buy

• Buy the WD Red Pro 8TB at the Western Digital store
• Buy the Seagate IronWolf Pro 8TB at the Seagate store

Comparing more drives? See our guide: Best NAS hard drives, which also covers the WD Red Plus. How we pick and source products: How we research.

GearSift isn’t affiliated with or endorsed by Western Digital or Seagate.

Real gear for a better everyday.

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Sources (all checked October 22, 2026, ET)

1. Western Digital US store, WD Red Pro 8TB, WD8006FFBX (specs, FAQ, Data Recovery Plan): https://www.westerndigital.com/products/internal-drives/wd-red-pro-sata-hdd?sku=WD8006FFBX
2. Western Digital, WD Red Pro data sheet (PDF, January 2025; 8TB columns WD8005FFBX and WD8003FFBX) (specs): https://www.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-red-pro-hdd/data-sheet-wd-red-pro-hdd.pdf
3. Western Digital support, “WD Product Warranty Periods” (specs): https://support-en.wd.com/app/Warranty_Policy
4. Western Digital, Warranty Policy (specs): https://www.westerndigital.com/support/store/warranty-policy
5. Seagate US store, IronWolf Pro 8TB, ST8000NT001 (specs): https://www.seagate.com/products/nas-drives/ironwolf-pro-hard-drive/?sku=ST8000NT001
6. Seagate, IronWolf Pro data sheet DS2129.4 (PDF, linked from the product page; 8TB column ST8000NT001) (specs): https://www.seagate.com/content/dam/seagate/en/content-fragments/products/datasheets/ironwolf-pro-12tb/ironwolf-pro-20tb-DS2129-4-2311US-en_US.pdf
7. Seagate, IronWolf Pro SATA Product Manual, 204502000 Rev. A, September 2022 (PDF, linked from the product page) (specs): https://www.seagate.com/content/dam/seagate/migrated-assets/www-content/product-content/ironwolf/en-us/docs/204502000a_Ironwolf_Pro_2-4-6-8-10.pdf
8. Seagate, Rescue Data Recovery Services (specs): https://www.seagate.com/products/rescue-data-recovery/
9. Seagate, Data Recovery Services Terms and Conditions (specs): https://www.seagate.com/legal/sales-and-promotion/data-recovery/
10. Seagate, Seagate Limited Warranty (consumer) (specs): https://www.seagate.com/support/warranty-and-replacements/limited-consumer-warranty/
11. Seagate, Seagate Channel Limited Warranty (specs): https://www.seagate.com/support/warranty-and-replacements/channel-limited-warranty/
12. Seagate, Business Storage/NAS Products Limited Warranty Statement (specs): https://www.seagate.com/support/warranty-and-replacements/limited-consumer-warranty-nas/