
Seagate IronWolf Pro 28TB Enterprise NAS Internal HDD Hard Drive – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 512MB Cache for RAID Network Attached Storage, Rescue Services (ST28000NT000)
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AI Verdict
A 28TB, 7200 RPM, 512MB cache CMR HDD engineered for 24x7 performance in multi-bay NAS and enterprise RAID systems.
This 28TB IronWolf Pro drive is a strong fit for users building or expanding high-capacity, high-performance NAS or enterprise RAID systems. Its 2.5 million hour MTBF, 550TB/year workload rating, and 5-year warranty with 3-year data recovery services directly address the needs for continuous operation and data integrity in such demanding environments.
If 28TB is overkill or too expensive, look for IronWolf Pro drives in lower capacities (e.g., 16TB or 20TB) that still offer the same enterprise-grade features.
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Pros
- Offers a massive 28 TB storage capacity, among the highest available for a single HDD.
- Features a 7200 RPM spindle speed and 512MB cache for sustained data transfer rates up to 285 MB/s.
- Rated for 2.5 million hours Mean Time Between Failures (MTBF) and a 5-year limited warranty.
- Includes complimentary 3-year Rescue Data Recovery Services, covering accidental data corruption or drive damage.
- Designed for demanding environments with a workload rating of up to 550TB per year.
- Utilizes All-CMR technology and AgileArray with RV sensors for consistent performance in multi-bay RAID systems.
Cons
- The price point is significantly higher than smaller capacity drives, making it a premium investment.
- Produces a noticeable 'floppy disk-like' seek noise when actively reading or writing data, though idle noise is minimal.
- May generate considerable heat during prolonged, heavy data transfers, requiring adequate system cooling.
- The cost per terabyte can be less favorable compared to purchasing multiple smaller, older generation drives.
Dimension Scores
The 7200 RPM spindle speed and 512MB cache deliver sustained transfer rates up to 285 MB/s, which is at the higher end for mechanical hard drives.
With a 2.5 million hour MTBF, 550TB/year workload rating, 5-year warranty, and 3-year data recovery services, this drive is built for continuous, demanding use.
Offering 28 TB, this drive provides one of the largest capacities available in a single 3.5-inch HDD, suitable for extensive data storage needs.
Optimized for NAS and RAID systems with standard SATA 6Gb/s interface and 3.5-inch form factor, ensuring broad integration into multi-bay enclosures.
Best For
- Multi-bay Network Attached Storage (NAS) systems requiring high capacity and 24x7 operation.
- Enterprise RAID storage solutions for commercial use.
- Media professionals and SMBs needing reliable, scalable data storage.
- On-premise AI model training where large datasets are frequently accessed.
Not Recommended For
- Budget-conscious users seeking the lowest cost per terabyte.
- Users sensitive to drive noise in quiet desktop environments.
- Single-drive desktop PC setups without specific NAS or RAID requirements.
Watch Out For
- The 28TB capacity comes with a high upfront cost, with Reddit users noting it's 'a lot of money'.
- While idle noise is minimal, active seek operations can sound 'like using the 3.5" floppy disks back in the 1990s'.
- Some users report that high-capacity drives can get 'really hot' during large data transfers, necessitating good circulation in your enclosure.
- Despite its 28TB capacity, the $/TB value might be less attractive than acquiring several smaller, older generation drives.
Full Specifications
| ASIN | B0FFBPK8T7 |
| Brand | Seagate |
| Color | NAS PRO |
| Series | ST28000NT000 |
| Language | English, English, English |
| Hard Drive | 28 TB Mechanical Hard Disk |
| Item Weight | 1.72 pounds |
| Manufacturer | Seagate |
| Special Feature | Data Recovery Service |
| Installation Type | Internal Hard Drive |
| Item model number | ST28000NT000 |
| Compatible Devices | Desktop |
| Product Dimensions | 8.75 x 7 x 2.95 inches |
| Hard Disk Interface | Serial ATA |
| Hard Drive Interface | Serial ATA |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Form Factor | 3.5 Inches |
| Item Dimensions LxWxH | 8.75 x 7 x 2.95 inches |
| Connectivity Technology | SATA |
| Digital Storage Capacity | 28 TB |
| Hard Drive Rotational Speed | 7200 |
What Buyers Say
Users frequently highlight the sheer 28TB capacity as a primary draw, though the premium price is a recurring point of discussion. While the drive is generally quiet at idle, the seek noise during active use is often compared to older 'floppy disk' drives, which some find noticeable. The included 3-year data recovery service and the 5-year warranty are consistently praised for providing peace of mind for valuable data.
“Man, this 28TB drive is a beast for my Plex server, but my wallet definitely felt that hit. The seek noise is kinda retro, like my old 90s PC, but at least it's not a jet engine anymore!”
Common Praise
- The 28 TB capacity is a game-changer for large data archives and media libraries.
- The 5-year limited warranty and 3-year Rescue Data Recovery Services offer significant peace of mind.
- Idle operation is reported to be very quiet, a step up from older IronWolf models.
- The 550TB/year workload rating and 2.5 million hour MTBF instill confidence for 24x7 operation.
- All-CMR technology is appreciated for consistent performance in NAS environments.
Common Complaints
- The cost is a significant barrier for many, with some users calling it a 'crazy price'.
- Seek noise, while not 'industrial' like older models, is still audible and described as 'floppy disk-like'.
- The cost per terabyte can be higher than less cutting-edge, smaller capacity drives.
- Some users express concern about heat generation during heavy use, requiring good airflow in their NAS enclosure.
Ownership Tips
- The drive's weight and build feel substantial, reflecting its enterprise-grade construction.
- Monitoring drive temperatures in a multi-bay NAS is important, especially during initial large data transfers.
- The IronWolf Health Management software provides useful insights into drive status, even if you don't use all its features.
- Registering for the Rescue Data Recovery Services is a straightforward process and a valuable safety net.
Frequently Asked Questions
What does CMR mean for this drive?
CMR stands for Conventional Magnetic Recording. All-CMR technology in this drive ensures consistent, predictable performance, which is crucial for multi-bay NAS and RAID environments, unlike SMR drives that can have performance degradation with heavy writes.
How long is the warranty and does it include data recovery?
The drive comes with a 5-year limited warranty. Additionally, it includes complimentary 3-year Rescue Data Recovery Services, which covers data loss from accidental corruption or physical damage.
Is this hard drive noisy during operation?
When idle, the 28TB IronWolf Pro is reported to be silent. However, during active data seeking, users describe the noise as comparable to a '3.5" floppy disk'.
Can I use this drive in a regular desktop computer?
While physically compatible with a desktop due to its 3.5-inch form factor and SATA interface, this drive is specifically optimized for 24x7 operation in NAS and RAID systems. Its features like RV sensors and TLER are designed for multi-drive environments.
What is the maximum data transfer speed?
The drive offers a maximum sustained data transfer rate of up to 285 MB/s, thanks to its 7200 RPM spindle speed and 512MB cache.
Buying Guide
When you're looking at a drive like this, you're buying serious storage for serious use. You need to think about how much data you actually need to store and how often you'll be accessing it. This isn't just a big hard drive; it's built for constant, heavy-duty work in a networked environment, not just sitting in a desktop PC for occasional backups.
Capacity (28 TB)
This is simply how much data the drive can hold. 28 terabytes is a massive amount, equivalent to thousands of movies or millions of photos, making it ideal for large media servers or business archives.
Workload Rating (550TB/year)
This tells you how much data can be written to and read from the drive annually without impacting its lifespan. A 550TB/year rating means it can handle a huge amount of continuous data activity, far more than a typical desktop drive.
MTBF (2.5 million hours)
Mean Time Between Failures is a statistical measure of how long a drive is expected to operate before a failure. 2.5 million hours is an extremely high rating, indicating a very robust and long-lasting drive designed for 24x7 operation.
CMR (Conventional Magnetic Recording)
This is the technology used to write data. CMR drives offer consistent performance, especially during heavy write operations, which is crucial for RAID arrays and NAS systems where data is constantly being accessed and modified.
Alternatives
If this drive's capacity or price is too high, consider drives with lower capacities (e.g., 16TB or 20TB) that still offer enterprise-grade features like high MTBF and workload ratings, or look for drives with a lower RPM if raw speed isn't your top priority.



