Head to head
Seagate IronWolf Pro 32TB vs WD Red Pro 18TB
Our pick
Seagate IronWolf Pro 32TB
NAS Hard Drives
Why this one
- Its 32TB capacity helps fit a large archive into fewer NAS bays, with a five-year hardware warranty and included recovery service subject to its terms.1


Product photographs. Not to scale.
What WD Red Pro 18TB offers
Choose the WD Red Pro 18TB when you need high capacity per bay and your NAS supports this exact 3.5-inch SATA model. It includes a five-year warranty and a rated 550TB annual workload limit; plan writes around that limit and keep a separate backup.2
2 models / at a glance
Key differences
What differs
| Specification | Seagate IronWolf Pro 32TB | WD Red Pro 18TB |
|---|---|---|
| Capacity | 32 TB1 | 18 TB2 |
More details
| Specification | Seagate IronWolf Pro 32TB | WD Red Pro 18TB |
|---|---|---|
| Workload rating | 550 TB/year1 | 550 TB/year2 |
| Warranty | 5 years1 | 5 years2 |
| MTBF rating | 2,500,000 hours1 | 2,500,000 hours2 |
| Vibration sensors | Yes1 | Not published |
| Operating power | 8.3 W1 | Not published |
| Data recovery included | Yes1 | Not published |
| Interface | SATA 6Gb/s1 | SATA 6.0 Gbit/s2 |
| Form factor | 3.5-inch3 | 3.5"2 |