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Seagate IronWolf Pro 28TB vs WD Red Plus 8TB NAS HDD

Buy the WD Red Plus 8TB if you need a quiet, low-power NAS drive and 8TB is enough. Buy the Seagate IronWolf Pro only if you need a single very large drive and can confirm the real capacity, since the listing title says 28TB but the spec field says 6TB. The WD Red Plus is $354.99 at Walmart as of November 7, 2026, and no price was given for the Seagate.

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Seagate
Seagate Ironwolf Pro 28TB 7.2K RPM SATA 6Gb/s 3.5inch Internal HDD - ST28000NT000

Seagate IronWolf Pro 28TB

Seagate Ironwolf Pro 28TB 7.2K RPM SATA 6Gb/s 3.5inch Internal HDD - ST28000NT000

See all prices and details

Choose the Seagate IronWolf Pro if you want a 7200 rpm drive for a single large-volume desktop or backup target and you verify the actual capacity before ordering.

Pros
  • 7200 rpm spindle gives faster sequential transfer than the WD's 5640 rpm
  • IronWolf Pro line is built for heavy workloads and multi-bay use
  • 3.5-inch SATA 6Gb/s fits standard desktop and NAS bays
Cons
  • Capacity is contradictory: 28TB in the name, 6TB in the specs
  • No cache, workload rating, MTBF or power figures given
  • No price available to compare against the WD
Western Digital
Western Digital 8TB WD Red Plus NAS SATA HDD, 3.5" Internal Hard Drive HDD, 5640 RPM, 256MB Cache, CMR

WD Red Plus 8TB NAS HDD

Western Digital 8TB WD Red Plus NAS SATA HDD, 3.5" Internal Hard Drive HDD, 5640 RPM, 256MB Cache, CMR

4.4(218 ratings)
$354.99at WalmartObserved at 11:51 AM
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Choose the WD Red Plus if you are building or expanding a NAS and want a 5640 rpm CMR drive rated for up to 8 bays with low power draw.

Pros
  • 8TB CMR drive, not SMR, so rebuilds and writes stay predictable
  • Rated for NAS systems up to 8 bays with NASware firmware
  • Low power: 5.2 W active, 3.1 W standby
  • 1,000,000 hour MTBF and 256 MB cache
  • Clear price: $354.99 at Walmart as of November 7, 2026
Cons
  • 5640 rpm is slower than a 7200 rpm drive for large sequential transfers
  • 8TB per drive means more bays and more drives for a given total capacity
  • Only 4.4 out of 5 from 218 ratings

What separates them

Seagate IronWolf Pro 28TBWD Red Plus 8TB NAS HDD
Stated capacityTitle says 28TB; spec field says 6TB8TB
Rotational speed7200 rpm5640 rpm
CacheNot stated256 MB
Recording technologyNot statedCMR
NAS ratingNot statedRAID-optimized, up to 8 bays, NASware firmware
Power drawNot stated5.2 W read/write, 3.1 W standby
Rated MTBFNot stated1,000,000 hours
PriceNo price given$354.99 at Walmart as of November 7, 2026

Price history

$374.99$233.99
Nov 2Nov 7
  • Seagate IronWolf Pro 28TB: lowest $233.99 on Nov 2 at eBay.
  • WD Red Plus 8TB NAS HDD: lowest $354.99 on Nov 5 at Amazon; $374.99 on Nov 7.

Prices at every store

Seagate IronWolf Pro 28TB

  • AmazonCheck price at Amazon
  • eBayCheck price at eBay
  • HardDrivesDirectCheck price at HardDrivesDirect

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Prices and history →

WD Red Plus 8TB NAS HDD

  • WalmartNew

    In stockSold by Pines and Finds LLCReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $354.99Observed at 11:51 AM
    Visit Walmart
  • Best BuyNew

    In stock

    $374.99Free shippingObserved at 11:50 AM
    Visit Best Buy
  • NeweggNew

    In stock

    $428.99Free shippingObserved at 11:50 AM
    Visit Newegg

Also available at

  • AmazonCheck price at Amazon
  • eBayCheck price at eBay
  • GovConnectionCheck price at GovConnection

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All 3 stores and price history →

Specs compared

SpecSeagate IronWolf Pro 28TBWD Red Plus 8TB NAS HDD
ConnectionSATASATA
Rotational Speed7200 rpm5400 rpm
Form Factor3.5 Inch Drive3.5 Inch Drive
Drive TypeHDDHDD
Capacity6 TB8 TB
hard_drive_capacity—8 TB
cache_memory—256 MB
edition—256MB
compatible_brands—RAID-optimized NAS systems with up to 8 bays
size—1
Color—Red
Option—Edit8TB, Red Plus
Show all 27 specsShow fewer specs
SpecSeagate IronWolf Pro 28TBWD Red Plus 8TB NAS HDD
Wi-Fi—No
Power Consumption (read) (W)—5.2
Depth (")—5.8
RPM—5640 rpm
Width (")—4.0
Type—HDD
Power Consumption (write) (W)—5.2
Weight (oz)—25.2
Placement—Internal
Size (GB)—8000

What reviewers say

WD Red Plus 8TB NAS HDD

  • 4.4 / 5218 ratings

Owners rate it 4.4 out of 5 from 218 ratings. Most praise it as a quiet, reliable NAS drive that runs cool and installs without fuss. Complaints center on speed and on the occasional drive arriving dead or failing early.

Pros
  • Quiet in multi-drive NAS enclosures
  • Runs cool and draws little power
  • CMR design trusted for RAID rebuilds
  • Straightforward install in Synology and QNAP units
Cons
  • Slower than 7200 RPM drives for large transfers
  • Some units arrive dead or fail within months
  • Higher cost per TB than desktop drives

Questions and answers

Which is better for a home NAS?
The WD Red Plus. It is CMR, rated for RAID up to 8 bays, and lists power and MTBF figures. The Seagate listing does not state NAS ratings, and its capacity is unclear.
Is the Seagate really 28TB?
The product name says 28TB but the spec field says 6TB. Confirm the exact model ST28000NT000 capacity with the seller before buying.
Which is faster?
The Seagate at 7200 rpm should beat the WD's 5640 rpm on sequential reads and writes. The WD's advantage is lower power and quieter NAS operation.
Is the WD Red Plus worth $354.99?
That is about $44 per TB. It is a fair NAS price for CMR 8TB drives, but check the price history on this page before buying.
Can I mix these two drives in one NAS?
You can, but matching capacity and speed is simpler. Mixing a 7200 rpm drive with a 5640 rpm drive can affect RAID rebuild times and noise.
Which lasts longer?
The WD is rated at 1,000,000 hours MTBF. Seagate gives no MTBF for this listing, so the WD is the only one with a published figure.

More comparisons

  • Western Digital 8TB WD Red Plus NAS SATA HDD, 3.5" Internal Hard Drive HDD, 5640 RPM, 256MB Cache, CMR vs Western Digital WD Red Plus 8TB NAS Internal Hard Drive (WD80EFZZ)

Buying guides that pick them

  • Best 28TB internal hard drives
Height (")—1.0
Cache Memory (MB)—256
Power Consumption (Standby) (W)—3.1
Interface—S-ATA 6Gb/s
MTBF (mean time between failures) (h)—1000000