Verdict
All guidesResearchOpen dataMethodologyAboutContact
Head-to-head · Best Nas Hard Drives

Seagate IronWolf Pro 18TB vs WD Red Plus 14TB

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

Verdict is reader-supported. As an Amazon Associate we earn from qualifying purchases. Some links on this page are affiliate links — if you click through and buy, we may earn a small commission at no extra cost to you. Our ratings are sourced from independent publications, not sponsors.
The short answer

Seagate IronWolf Pro 18TB comes out ahead by a clear margin (4.5 vs 4.0). The gap is mostly about Enterprise users needing extended warranty — read the strengths below before deciding.

Seagate IronWolf Pro 18TB
Higher ratedRanked #2 in Best Nas Hard Drives
Seagate IronWolf Pro 18TB
3 sources1 derived$712as of Sep 28

TechRadar called the Seagate IronWolf Pro 18TB 'one of the largest NAS drives currently on the market' and praised its 'altogether better package' despite being priced higher than competitors. The drive features an 18TB capacity with 7200RPM spindle speed, 256MB cache, and is helium-filled for efficiency. StorageReview noted its suitability for business-grade NAS appliances and highlighted its 1.2 million hours MTBF rating. The drive is designed for continuous operation with a workload rate limit of 300TB per year, making it ideal for enterprise and prosumer use cases. However, it's priced at a premium and is not recommended for budget-conscious consumers or smaller NAS setups.

Strengths
  • — Five year warranty
  • — Advanced drive management solution
  • — Bundled data recovery services
Watch-outs
  • — More expensive than the competition
  • — Designed for 24-bay NAS appliances
$712 · Buy at newegg.comFull review →
WD Red Plus 14TB
Ranked #4 in Best Nas Hard Drives
WD Red Plus 14TB
5 sourcesall derived$841.45as of Sep 28

TechRadar reviewed the WD Red Plus 14TB and noted its reliability in NAS environments, though it found the pricing not competitive. The drive features a helium-filled design, 550TB/year workload rating, and delivers read speeds near 265MB/s. While it's built for continuous operation, it runs at 5400 RPM, making it slower than its Red Pro counterpart. This makes it a solid choice for NAS users prioritizing durability over raw performance, but those seeking better value may want to consider alternatives.

Strengths
  • — Built for 24x7 NAS environments with 550TB/year workload rating
  • — Helium-filled design for reduced resistance
  • — Capable of reading speeds close to 265MB/s and writing 250MB/s
Watch-outs
  • — Not price competitive compared to similar Seagate IronWolf Pro drives
  • — High price point
$841.45 · Check Price on AmazonFull review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

Seagate IronWolf Pro 18TB

The Seagate IronWolf Pro 18TB offers a five-year warranty and bundled data recovery services.

WD Red Plus 14TB

The WD Red Plus 14TB offers a 550TB/year workload rating and helium-filled design, matching the Seagate IronWolf Pro 18TB in durability but at a lower price point.

Specs side-by-side

SpecSeagate IronWolf Pro 18TBWD Red Plus 14TB
Capacity18TB14TB
Spindle Speed7200RPM7200 RPM
Cache256MB512MB
InterfaceSATASATA 6Gb/s
Warranty5-year limited warranty3-year limited warranty
Workload Rating300TB per year180 TB/yr
Form Factor3.5 Inch3.5 Inch
ConnectivitySATA 6Gb/sSATA 6Gb/s
Drive SupportUp to 24-bayUp to 8 Bays
RAIDAgileArray enables Dual-Plane Balancing and Time-Limited Error Recovery—
← See the full ranking of best nas hard drives