Best NAS Hard Drives (2026): 8 Compared (25 Sources)

What are the best NAS hard drives in 2026?

Summary

Tom's Hardware's and TechRadar's guides both put the Seagate IronWolf Pro first for a NAS. Tom's Hardware's guide, last updated 2026-10-09, names the IronWolf Pro 24TB its best NAS hard drive and the WD Red Pro 22TB the alternative, though its own tests of both lines were of the 20TB models [src1]. TechRadar's NAS guide, last updated in January 2025, picks the IronWolf Pro 20TB overall and the Seagate Exos 20TB for enterprise [src2]. Every drive on this card was tested at the capacity we list: the IronWolf Pro 24TB by CGMagazine and NAS Compares [src3, src4]; the IronWolf Pro 30TB by Tom's Hardware, TechRadar and StorageReview [src5, src6, src7]; the IronWolf Pro 32TB by StorageReview [src7]; the WD Red Pro 22TB by StorageReview and NAS Compares [src8, src9]; the Exos X20 20TB by StorageReview and TechRadar [src10, src11]; the Toshiba N300 Pro 12TB by Tom's Hardware [src14]; and the 4TB WD Red Plus and Seagate IronWolf by TechRadar, head to head [src12].

This refresh rebuilds the card on those tests, and it changes the picks. The previous top pick, the WD Red Plus 8TB, and the previous value pick, the WD Ultrastar DC HC580 24TB, were ranked partly on price and stock, and no outlet we read tested either drive. The budget role is retired: no outlet we read names a budget NAS drive it tested, and TechRadar's 2026 reviews of the WD Red Plus 4TB and the Toshiba N300 4TB both stop short of recommending them because of their prices [src12, src25]. Eight drives left the card in all; they are listed, with the reason for each, under Important Caveats.

Prices are far above what most reviewers paid. Tom's Hardware reported in January 2026 on ComputerBase research finding a 46% average rise in hard drive prices since September 2025, with NAS lines including IronWolf and WD Red up 23% to 66% [src18]. XDA reported a 30-40% rise over six months and Western Digital's statement that its 2026 hard drive output is sold out [src19], and TechRadar found an IronWolf 8TB costing about 95% more in May 2026 than in 2025 [src13]. The prices quoted in the 2022-2024 reviews below are not today's; the table at the top of this page shows today's price and stock from our daily checks.

Top 8 NAS Hard Drives Compared

Prices are for the capacity named in the Model column. Each is the last price our daily check observed on the listing we link, from whichever seller offered it; a dash means our latest check returned no price, and the table at the top of this page shows today's price, stock and seller. Specifications are from the testers' reviews; speeds are each tester's own measurement with its own tools, so compare them within a review, not across reviews.

All eight drives are CMR. The Exos X20's 256MB cache is from Tom's Hardware, which notes that the older Exos drives have 256MB rather than 512MB [src1]. The IronWolf Pro 24TB's 512MB cache is CGMagazine's figure [src3]; NAS Compares listed 256MB [src4]. Every other specification is from the reviews cited in each drive's section below [src3, src4, src5, src7, src8, src10, src11, src12, src14].

Best for Each Use Case

Top Pick: Seagate IronWolf Pro 24TB — Check price

Tom's Hardware's best NAS hard drive. Its guide says the IronWolf Pro posts faster speeds than the competing WD Red Pro in many of its tests and praises Seagate's three years of data recovery services; it notes that newer IronWolf Pro models, the 24TB among them, have larger caches than earlier ones of the same capacity and a workload rating raised from 300 to 550TB a year, and lists a five-year warranty for the line. Its own IronWolf Pro test was of the 20TB model [src1]. CGMagazine tested this 24TB drive in a four-bay Synology DS923+ and scored it 8/10: 7200 RPM, a 512MB cache, a 2.5-million-hour MTBF and a 550TB/year workload rating, with speeds close to its 285 MB/s rating in real-world use. It found the drive noticeably louder than some competitors under heavy read and write, and its power use on the higher side [src3]. NAS Compares tested the same ST24000NT002 on a PC and in a Synology DS923+, listing its cache as 256MB rather than 512MB. A 20GB copy of mixed files averaged 205MB/s and peaked at 260MB/s, and it calls the drive a sweet spot between price, durability and value, with high operational noise and higher than typical power use [src4]. Seagate's Rescue data recovery is included for three years [src4].

Best High-Capacity: Seagate IronWolf Pro 30TB — Check price

Tom's Hardware's review calls the IronWolf Pro 30TB (ST30000NT011) "an Exos M designed for NAS" and "the largest drive you'll need for now". It records with Seagate's heat-assisted magnetic recording (HAMR), on the Mozaic 3+ platform, and carries a 512MB cache, a 550TB/year workload rating, a 2.5-million-hour MTBF, a five-year warranty and three years of data recovery. Tom's Hardware found its peak performance as fast as or faster than any other hard drive on the market, but calls it a much harder sell for a home user who can make do with 20TB or smaller drives [src5]. Its guide says the IronWolf Pro, "which now goes up to 30TB", remains the best NAS drive [src1]. TechRadar tested it in a UGREEN NAS alongside a second 30TB drive and on a PC, measured 287.64 MB/s reads and 272.34 MB/s writes in ATTO, and rated it Recommended; its complaints are the price and that Seagate's health management does not work with every NAS [src6]. StorageReview measured the 30TB at 287MB/s reads and 267MB/s writes in its FIO test, and the 30TB generally ran ahead of the newer 32TB in its application tests [src7]. For home users who find 30TB-class drives too expensive, Tom's Hardware still recommends the smaller IronWolf Pro capacities and the older Exos drives [src1].

Best Enterprise-Class Drive: Seagate Exos X20 20TB — Check price

TechRadar's best NAS hard drive for enterprise [src2]. TechRadar tested the SATA Exos 20TB at close to 285MB/s read and write in most tests, lists "Affordable" among its reasons to buy, and would pick it over the IronWolf Pro 20TB for an array because of its higher 550TB/year workload rating [src11]. TechRadar's review calls the drive the "EXOS 20TB" without naming a series; its March 2022 date and its description of the EXOS 18TB as the previously largest drive in the range place it in the X20 generation [src11]. StorageReview tested the 20TB Exos X20 and found it helium-sealed, with a 2.5-million-hour MTBF and a five-year warranty, but its tests showed it lagging noticeably behind the IronWolf Pro 20TB, which Seagate puts down to firmware: the Exos does not get the IronWolf Pro's NAS firmware enhancements. In January 2022 its street price was at a substantial discount to the IronWolf Pro [src10]. Tom's Hardware's guide names the Exos X14 to X20 line its best lower-capacity (or budget) enterprise drive: older technology and a 256MB cache, but less money to invest [src1]. Both tests are from 2022, so their prices are not today's.

Alternative to the Top Pick: WD Red Pro 22TB — Check price

Tom's Hardware's alternative to the IronWolf Pro: a worthy NAS drive with strong random performance and a 512MB cache, with similar specifications and pricing to the IronWolf Pro. It says the Red Pro's OptiNAND technology gave better 4KB results, so it suits workloads with small I/O, and calls its 300TB/year workload rating "merely average"; its Red Pro review was of the 20TB model [src1]. StorageReview tested this 22TB WD221KFGX: 7200 RPM, 512MB cache, a 300TB/year workload rating, a 1-million-hour MTBF and a five-year warranty. Eight of them in RAID6 in a QNAP TVS-h1288x read at 2.31GB/s and wrote at 2.28GB/s in its 128K sequential test over SMB [src8]. In the single-drive FIO test StorageReview ran for its 2026 IronWolf Pro 32TB review, the Red Pro 22TB read at 271MB/s and wrote at 276MB/s [src7]. NAS Compares scored it 9.4, found it beat WD's own performance ratings in almost every test, and lists its cons as a very expensive drive per TB and not a quiet one in random active use [src9].

Highest Capacity on This Card: Seagate IronWolf Pro 32TB — Check price

StorageReview tested the IronWolf Pro 32TB (ST32000NT000): ten platters and twenty heads on Seagate's Mozaic3+ HAMR platform, presented to the host as a CMR drive, with a 512MB cache, a 550TB/year workload rating, a 2.5-million-hour MTBF, a five-year warranty and three years of Rescue. Its FIO test measured 284MB/s reads and 283MB/s writes, but in its application tests the 32TB generally trailed the Exos 30TB and the IronWolf Pro 30TB. StorageReview quotes an $849.99 launch MSRP and about $1,159.99 direct from Seagate at review [src7]. StorageReview is the only outlet we read that has tested it.

Quiet 4TB: WD Red Plus 4TB (WD40EFPX) — See at Western Digital

TechRadar tested the WD40EFPX, the 256MB-cache version of the 4TB Red Plus: 5400 RPM, CMR, a 180TB/year workload rating, a 1-million-hour MTBF and a three-year warranty, for NAS units of up to eight bays. Against the Seagate IronWolf 4TB it was a little faster in ATTO (206.24 MB/s reads against 192.35) and PCMark, and the quieter of the two in its testing; TechRadar says the results are within variance and not definitive. It has no equivalent of Seagate's health management or bundled data recovery. TechRadar's verdict: "If the asking price wasn't 25% higher than a few months ago, I might recommend this drive as an alternative to the IronWolf range" [src12].

4TB with Health Monitoring: Seagate IronWolf 4TB — Check price

TechRadar measured the IronWolf 4TB (ST4000VN006) in its WD Red Plus 4TB review: 192.35 MB/s reads and 191.76 MB/s writes in ATTO, with specifications that match the WD's — 5400 RPM, a 256MB cache, CMR, a 180TB/year workload rating, a 1-million-hour MTBF and a three-year warranty. What the IronWolf adds is IronWolf Health Management, which works with Synology, QNAP, Asustor and other NAS platforms, three years of Rescue data recovery, and a ten-times-lower rated non-recoverable read error rate (1 in 10¹⁵ bits against 1 in 10¹⁴) [src12]. TechRadar priced it $20 above the WD Red Plus 4TB [src12].

Lower-Capacity Alternative: Toshiba N300 Pro 12TB — See at Toshiba

Tom's Hardware names the N300 Pro its best lower-capacity NAS hard drive [src1]. Tom's Hardware tested the N300 Pro at 12TB and 20TB: CMR, 7200 RPM, a 512MB cache, a 281MB/s rated sustained transfer rate, a 300TB/year workload rating, a 1.2-million-hour MTBF and a five-year warranty, for NAS units of up to 24 drives. The 12TB topped its CrystalDiskMark 1MB sequential charts for both reads and writes, and Tom's Hardware says the line makes the most sense in the 12-18TB range, listing "not the fastest or best-supported 20TB option" among its cons [src14]. We link Toshiba's own US page for the N300 Pro, which listed 12TB among its capacities when we checked on 2026-10-15. Tom's Hardware gives its 12TB sample's model number as HDWG51EXZSTB; Toshiba's US data sheet lists the 12TB retail drive as HDWG51CXZSTB, with the same 512MB cache, 281MB/s, 300TB/year and 1.2-million-hour ratings.

Key Market Trends (2026)

• Hard drive prices rose sharply: Tom's Hardware reported in January 2026 on ComputerBase's finding of a 46% average rise since September 2025 across 12 popular drives at European prices, with NAS lines up 23% to 66%, and found the trend in the US too: a 4TB IronWolf went from $70 in early 2023 to $99 [src18]. XDA reported a 30-40% rise over six months [src19], and TechRadar found an IronWolf 8TB costing about 95% more in May 2026 than in 2025 [src13].
• Supply goes to cloud customers first: Western Digital's CEO said its 2026 hard drive inventory is sold out, with long-term agreements for 2027 and 2028, XDA reported in March 2026 [src19].
• HAMR has reached NAS drives: the IronWolf Pro 30TB uses Seagate's heat-assisted magnetic recording, a first for a mass-market hard drive, Tom's Hardware says [src5]. StorageReview says the IronWolf Pro 32TB is on the same Mozaic3+ HAMR platform and presents as a CMR drive; Tom's Hardware's January 2026 launch report described the 32TB drives as CMR [src7, src20].
• Pro-class workload ratings moved up: Tom's Hardware notes that the newer IronWolf Pro models went from 300 to 550TB a year, the rating CGMagazine and NAS Compares list for the 24TB, while the WD Red Pro 22TB is rated for 300TB a year [src1, src3, src4, src8].
• Bigger drives are coming, to data centers first: Seagate began shipping 44TB Mozaic 4+ HAMR drives to two hyperscale cloud providers in March 2026 [src21]. Western Digital plans HAMR drives at 36TB (CMR) and 44TB (UltraSMR), qualified by customers by late 2026 and shipping in volume in the first half of 2027, and 80TB CMR and 100TB UltraSMR drives around 2030 [src22].
• Synology lifted its drive restriction: DSM 7.3 lets the 2025 DiskStation models use third-party hard drives such as WD Red and Seagate IronWolf [src23].
• Fleet failure rates fell in 2025: Backblaze's annualized failure rate across 344,196 drives in 30 models was 1.36% in 2025, down from 1.55% in 2024, and its lifetime rate was 1.30% [src24]. Its fleet is data-center drives, not the NAS models on this card.

Important Caveats

• Capacity is the SKU. A test of one capacity is not a test of another. Tom's Hardware's IronWolf Pro and WD Red Pro tests were of the 20TB models, though its guide names the 24TB and 22TB [src1]; and WD sells two different 12TB Red Plus models, the 256MB-cache WD120EFBX and the 512MB-cache WD120EFGX [src12, src15].
• Check the model number, not only the name. The WD Red Plus 4TB TechRadar tested is the WD40EFPX [src12], and we link Western Digital's own page for that model. The IronWolf 4TB listing we link was titled ST4000VNZ06/006 and listed a 64MB cache when we checked on 2026-10-15, where TechRadar gives the ST4000VN006 a 256MB cache [src12].
• Several tests are old. The Exos X20 tests are from 2022 and the WD Red Pro 22TB tests from 2022 and 2023 [src9, src10, src11, src8], and the prices they quote are not today's: Tom's Hardware reported ComputerBase's finding of a 46% average rise in hard drive prices from September 2025 to January 2026 [src18].
• Pro-class drives are loud. NAS Compares found the IronWolf Pro 24TB and the WD Red Pro 22TB noisy in desktop NAS units [src4, src9], and CGMagazine found the IronWolf Pro 24TB louder than some competitors under heavy read/write [src3]. TechRadar found the 4TB Toshiba N300 noisy too [src25].
• The WD Red name without "Plus" or "Pro" is used for device-managed SMR drives at 2TB, 3TB, 4TB and 6TB, which TechRadar describes as unsuited to the random writes of a RAID rebuild; WD Red Plus and Red Pro are CMR [src12]. TechRadar's NAS guide still lists the WD Red as its budget pick, without a review [src2].
• A NAS is not a backup: RAID protects against a drive failing, not against deletion, ransomware or losing the NAS itself. Keep at least one copy off the array.
• MTBF is a statistical measure across a population, not a guarantee of individual drive lifespan.
• Backblaze's failure data comes from data-center drives in a cloud workload, which may differ from home NAS use [src24].
• What left the card, and why. The WD Red Plus 8TB (WD80EFPX), the previous top pick: no outlet we read tested it; TechRadar's June 2026 price table lists it as the best-value Red Plus by cost per terabyte [src12]. The WD Ultrastar DC HC580 24TB, the previous value pick: no outlet we read tested it. The Seagate IronWolf 4TB stays on the card, but no longer as the budget pick (above). The Seagate IronWolf 8TB we listed was the 2016 ST8000VN0022; TechRadar's 2026 review covers the later ST8000VN004 and says it is not reviewing the ST8000VN0022 [src13]. The WD Red Plus 12TB we listed was the WD120EFGX; Tom's Hardware tested the WD120EFBX [src15, src12]. The Toshiba N300 8TB we listed was the HDWG480XZSTA; StorageReview's test was of the first N300 8TB, with a 128MB buffer, in 2017 [src16], and TechRadar's 2026 N300 test was of the 4TB [src25]. The Toshiba N300 Pro 22TB: Tom's Hardware names the N300 Pro its best lower-capacity NAS drive but tested the 12TB and 20TB, and says the line makes the most sense at 12-18TB [src1, src14]; no outlet we read tested the 22TB, so the card now lists the N300 Pro at 12TB (above). The WD Red Pro 26TB and the Synology HAT5310-8T: no outlet we read tested either.