Seagate IronWolf 4TB NAS Internal Hard Drive CMR 3.5 Inch SATA 6Gb/s 5400 RPM 64MB Cache
- 4 TB, CMR mechanical hard disk
- 5400 rpm, 64MB cache
- SATA 6Gb/s 3.5 inch internal drive
- Up to 8 bays of NAS use
- 180 MB/s read speed
- IronWolf Health Management built in
- 1M hours MTBF
- 3-year limited warranty with Rescue Data Recovery
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A NAS-oriented internal hard drive for home or small office storage in enclosures of up to eight bays, with health monitoring and a data recovery service bundled in. It is a mechanical drive, not an SSD.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B09NHV3CK9Model: ST4000VN006Category: Internal Hard Drives
Colors Available
Sizes Available
Need a different one? Pick on Amazon →
Overview
Storing shared files for several users is the job of this IronWolf drive, which is built for NAS enclosures of up to eight bays. Health monitoring is built in, and a Rescue Data Recovery service comes with the warranty.
Choose it for a NAS or RAID box where low vibration, CMR recording and health reporting matter. The limit is a messy listing: one transfer-rate field is wildly wrong, the color field says NAS and the compatible devices field says desktop.
Who it's for
A home lab or small office filling a multi-bay NAS will use the CMR design and the recovery service. Buyers needing faster random access, or a very large rack of drives, should look elsewhere.
Pros and cons
- CMR recording per title
- Built for NAS use
- Health management system
- Data recovery service included
- Mechanical disk, not flash
- Transfer rate field is wrong
- Color and device fields are unreliable
Performance notes
A low spindle speed reduces heat, noise and vibration, which suits closely packed NAS bays. CMR recording writes tracks without overlap, which makes performance steadier during RAID rebuilds than overlapping methods do. The health management system lets drive condition be monitored.
Where it stands among internal hard drives
- #1 most-searched brand and model of the 18 internal hard drives lines we track (by search demand, not sales).
From the specs of the 15 internal hard drives we list; not a test result.
Specifications
| Model | ST4000VN006 |
|---|---|
| Dimensions & fit | |
| Cache | 64MB |
| Weight | 490 g |
| Item dimensions L x W x Thickness | 5.79"L x 4.01"W x 1.03"Th |
| Capacity & performance | |
| Capacity | 4 TB |
| Rotational speed | 5400 rpm |
| Read speed | 180 megabytes per second |
| Construction & materials | |
| Enclosure material | Aluminum |
| Compatibility & installation | |
| Connection | SATA 6.0 Gb/s |
| Installation | Internal Hard Drive |
| Warranty & support | |
| Warranty | 3-Year Limited |
| Other details | |
| Form factor | 3.5 inches |
| Recording method (title) | CMR |
| NAS bays | Up to 8 bays |
| Drive type | Mechanical Hard Disk |
| Data recovery | 3-year Seagate Rescue Data Recovery service |
| MTBF | 1M hours |
Frequently asked questions
Does the Seagate IronWolf ST4000VN006 work in a desktop PC?
Compatible devices are listed as Desktop, and it is a standard SATA 3.5 inch internal drive, though it is designed for NAS use.
Is the Seagate IronWolf ST4000VN006 CMR?
The title says CMR.
What is the transfer rate of the ST4000VN006?
The data transfer rate field says 5000 megabytes per second, which cannot be right for a SATA 6Gb/s mechanical drive. The read speed is listed as 180 megabytes per second.