Seagate IronWolf Pro 20TB 3.5" NAS Hard Drive ST20000NT001
The Seagate IronWolf Pro 20TB is a 3.5" CMR hard drive built for 24x7 use in multi-bay, multi-user NAS and RAID systems. It spins at 7200 RPM with a 256 MB cache and up to 285 MB/s sustained transfer, and is rated for 550 TB/year workloads with a 2.5 million hour MTBF.
Key features
- Built for NAS: AgileArray with dual-plane balancing, time-limited error recovery (TLER) and rotational vibration sensors for RAID performance in multi-bay systems.
- All-CMR recording for consistent 24x7 performance.
- Heavy workloads: up to 550 TB/year workload rating and 2.5M hours MTBF.
- IronWolf Health Management on leading NAS systems, with prevention, intervention and recovery recommendations.
- Seagate cover: 5-year limited warranty plus 3 years of Rescue Data Recovery Services.
Specifications
| Specification | Detail |
|---|---|
| Model | ST20000NT001 |
| Capacity | 20TB |
| Form factor / interface | 3.5" / SATA 6Gb/s |
| Recording technology | CMR |
| Spindle speed | 7200 RPM |
| Cache | 256 MB |
| Max. sustained transfer rate | 285 MB/s |
| Drive bays supported | Unlimited |
| Workload rate limit | 550 TB/year |
| MTBF | 2,500,000 hours |
| Power-on hours per year | 8,760 |
| Non-recoverable read errors | 1 per 10E15 |
| Rotational vibration (10-1500 Hz) | 12.5 rad/s, with RV sensors |
| Power | 7.7 W average operating; 5.7 W idle; 1.2 W standby/sleep |
| Operating temperature | 0°C ambient min; 65°C drive-reported max |
| Operating shock (2 ms, read/write) | 40/40 Gs |
| Acoustics (idle) | 20 dBA |
| Sector size | 512E |
| Dimensions (H x W x D) | 26.11 x 101.85 x 146.99mm |
| Weight | 690g |
| Warranty / data recovery (Seagate) | 5-year limited warranty; 3-year Rescue Data Recovery Services |
Compatibility
- Interface: SATA 6Gb/s, 3.5" drive bays.
- Systems: designed for multi-bay NAS and RAID storage. Check your NAS maker's compatibility list before buying.
- IronWolf Health Management: available on leading NAS systems.
Who it's for
Suited to: small businesses, media professionals and power users running always-on NAS or RAID storage with many users.
Not suited to: laptops or systems without a 3.5" SATA bay. Browse more Seagate drives, or find a Synology NAS to put it in.
FAQs
Is this drive CMR or SMR?
CMR. Seagate states the IronWolf Pro range is all-CMR.
How fast is it?
Seagate lists 7200 RPM, a 256 MB cache and a maximum sustained transfer rate of 285 MB/s.
What warranty does it have?
Seagate provides a 5-year limited warranty and 3 years of complimentary Rescue Data Recovery Services.
How many drive bays is it rated for?
Seagate lists the supported drive bays as unlimited.
