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Seagate IronWolf 4TB NAS hard drive vs Seagate IronWolf Pro ST6000NE000

Researched, not hands-on tested.How we review ›

all judged against NAS hard drives at a similar price

The Seagate IronWolf 4TB NAS hard drive and Seagate IronWolf Pro ST6000NE000 both score 7.0/10 overall.

The Seagate IronWolf 4TB NAS hard drive leads on recording technology and noise and power.

The Seagate IronWolf Pro ST6000NE000 leads on reliability ratings, warranty and performance.

The biggest difference is recording technology, where the Seagate IronWolf 4TB NAS hard drive scores 9/10 to the Seagate IronWolf Pro ST6000NE000's 6/10.

Seagate IronWolf 4TB NAS hard drive

Seagate IronWolf 4TB NAS hard drive

7.0/10verdict: good, not the best

The Seagate IronWolf 4TB is for people building or expanding a small NAS of up to eight bays who want CMR recording and a 3-year warranty. It suits bulk storage, backups and media libraries where low noise and power draw matter more than raw speed. Buyers need to check which of the two model numbers they are getting, because speed, cache and noise figures differ.

Typically about £183.58 in the UK when we researched itCheck price at Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Seagate IronWolf Pro ST6000NE000

7.0/10verdict: good, not the best

The IronWolf Pro ST6000NE000 is a 6TB drive for multi-bay NAS builds that want a 5-year warranty and a 300 TB/year workload rating. It suits people who value 5-year cover and bundled data recovery over low noise. It fits a rack or tower NAS where the drive sits away from living space.

Typically about £230 in the UK when we researched itCheck price at Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Scores, criterion by criterion

CriterionWeightSeagate IronWolf 4TB NAS hard driveSeagate IronWolf Pro ST6000NE000
Reliability ratings25%6/107/10
Recording technology20%9/106/10
Warranty20%7/1010/10
Performance20%6/107/10
Noise and power15%7/104/10
Overall7.0/107.0/10

Specifications

SpecSeagate IronWolf 4TB NAS hard driveSeagate IronWolf Pro ST6000NE000
Capacity4TB6TB
Spindle speedST4000VN006: 5400 RPM; ST4000VN008: 5900 RPM7,200 rpm
CacheST4000VN006: 256MB; ST4000VN008: 64MB256 MB
Recording (CMR/SMR)CMRPerpendicular
Workload rating180TB/year (rated workload, both models)300 TB/year
MTBF1,000,000 hours1,200,000 hours
Rated for bays1-8 BaysUp to 24
Warranty3 years limited5 years limited

Strengths and weaknesses

Seagate IronWolf 4TB NAS hard drive

  • + CMR recording on both models
  • + Rated 23 dBA idle noise and 4.8W average power
  • + Warranty and Rescue recovery praised by owners
  • − Three independent reports of dead or faulty units
  • − Sustained speed tops out at 202MB/s
  • − Owners report mixed noise on the 5,400rpm model

Skip it if:

  • Buyers who need sustained transfer rates above 202MB/s
  • People putting a NAS in a very quiet room who are wary of the 5,400rpm model's mixed noise reports
  • Anyone outside a region where Seagate's Rescue recovery is available and who is relying on it
Read the full Seagate IronWolf 4TB NAS hard drive review ›

Seagate IronWolf Pro ST6000NE000

  • + 5-year limited warranty with 2-year data recovery plan
  • + 300 TB/year workload rating and up to 24 bays
  • + 214 MB/s maximum sustained transfer rate
  • − 7,200 rpm spindle speed, with noise rated at 2.7 bels
  • − Data recovery needs registration; availability varies by country
  • − Datasheet lists perpendicular recording without naming CMR or SMR

Skip it if:

  • Buyers placing a NAS in a quiet room where 7,200 rpm noise would bother them
  • Buyers who need CMR confirmed on the datasheet before buying
  • Buyers in a country where the data recovery plan is unavailable and who wanted it
Read the full Seagate IronWolf Pro ST6000NE000 review ›

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