WD Red Pro 18TB vs Seagate IronWolf Pro 18TB

Seagate IronWolf Pro 18TB wins — The Seagate IronWolf Pro has a slight edge — better sustained throughput, a 300 TB/year workload rating vs WD's 180 TB/y…

Scores: WD Red Pro 18TB 6.6/10 · Seagate IronWolf Pro 18TB 7.6/10

The Seagate IronWolf Pro has a slight edge — better sustained throughput, a 300 TB/year workload rating vs WD's 180 TB/year, and free IronWolf Health Management software. For Synology NAS users specifically, IronWolf drives carry additional validation through Synology's compatibility program.

Spec-by-spec comparison

WD Red Pro 18TBSeagate IronWolf Pro 18TB
Capacity18TB18TB
RPM7200 RPM7200 RPM
Recording TechCMRCMR
Cache256 MB256 MB
Workload Rating180 TB/year300 TB/year
Warranty5 years5 years

WD Red Pro 18TB

What works

  • Widely tested in home NAS environments
  • Strong compatibility with QNAP and ASUS NAS
  • WD Red ecosystem tools

What doesn't

  • Only 180 TB/year workload rating
  • No bundled data recovery services
  • Less Backblaze fleet data available at this capacity

Seagate IronWolf Pro 18TB

What works

  • 300 TB/year workload rating vs 180 TB/year
  • Free IronWolf Health Management software
  • 2 years Rescue Data Recovery included

What doesn't

  • Slightly higher price at 18TB
  • Seagate has had some high-profile failure rate incidents historically (older models, largely resolved)

Bottom line

Our pick: Seagate IronWolf Pro 18TB.

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