Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST20000NT001)
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Availability:
In Stock.
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Monday, Jun 23
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Style: IronWolf Pro
Capacity: 20TB
Color: NAS PRO
Features
- High Performance: All-CMR (conventional magnetic recording) portfolio enables consistent, industry-leading 247 performance allowing users to access data anytime, anywhere.Average Operating Power (W) - 7.7W, Operating Temperature (drive reported, max C) : 65, Operating Temperature (ambient, min C) : 0
- Class-Leading Dependability: Up to 550TB/year workload rating, 2.5M hours MTBF, and 5-year limited warranty for unparalleled total cost of ownership (TCO)
- Peace of Mind with Data Recovery: Complimentary 3 year Rescue Data Recovery Services for a hassle-free, zero-cost data recovery experience
- IronWolf Health Management: Helps protect data with prevention, intervention, and recovery recommendations to ensure peak system health
- Optimized for NAS: AgileArray with dual-plane balancing, time-limited error recovery (TLER), and rotational vibration (RV) sensors to deliver top RAID performance in multi-bay environments
Description
IronWolf® Pro drives are engineered to deliver 24×7 performance, reliability, and dependability in multi-bay, multi-user commercial and enterprise RAID storage solutions. Built tough with conventional magnetic recording (CMR) technology, rotational vibration sensors, and AgileArray™ firmware for consistent, best-in-class performance and total cost of ownership (TCO). Peace of mind with five-year limited warranty, complimentary three-year Rescue Data Recovery Services, and IronWolf Health Management.
Digital Storage Capacity: 20 TB
Hard Disk Interface: eSATA
Connectivity Technology: SATA
Brand: Seagate
Special Feature: Portable
Hard Disk Form Factor: 3.5 Inches
Hard Disk Description: Mechanical Hard Disk
Compatible Devices: Desktop
Installation Type: Internal Hard Drive
Color: NAS PRO
Hard Drive: 20 TB Mechanical Hard Disk
Brand: Seagate
Series: ST20000NT001
Item model number: ST20000NT001
Item Weight: 1.7 pounds
Product Dimensions: 5.79 x 4.01 x 1.03 inches
Item Dimensions LxWxH: 5.79 x 4.01 x 1.03 inches
Color: NAS PRO
Computer Memory Type: DIMM
Hard Drive Interface: eSATA
Hard Drive Rotational Speed: 7200 RPM
Manufacturer: Seagate
Language: English
Is Discontinued By Manufacturer: No
Date First Available: August 22, 2022
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Jun 23
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: IronWolf
Capacity: 4TB
Color: NAS
I bought a 4TB Seagate Ironwolf drive to replace a WD drive I had that was giving errors in my UNRAID server. I have not bought a Seagate drive in a very long time. There was a period of time when Seagate was great, then a period of time when they were not so great. Anyway, I figured I would give Seagate a try again, especially since their drive was $15 cheaper than the same WD drive at the time. I received my drive and it was well packaged in protective packaging and inside a box. The drive had the same familiar footprint dimensions but was a shorter height which was interesting. Anyway, it didn't make a difference really. I removed my failing WD drive from the server, and then slotted this seagate drive in. I then started the server and once booted I assigned the drive to the correct slot in the menu and the server immediately began rebuilding the data on the new seagate drive. The drive had zero issues and zero errors on it from testing and rebuilding. It delivers good read/write speeds, but read/write speeds are really dependent upon many factors and what the server is doing at the time and so forth, so no detailed reports on that. The Seagate drive has been running 24/7 on my server for about a month now and not a single issue with it so far. The shorter height is interesting as it lets more air from the front facing fans pass between it and the drive above it, so that is a plus I suppose. If this drive holds up for 6+ months I will probably replace more of my server drives with Seagate drives. I have 2 other server drives coming on replacement time in near while, so I will be purchasing at least a couple more of these as they go on sale from time to time. I will need to compare the longevity of the Seagate drives with the WD drives. I've had good luck with WD up until about a year ago. Now, their drives do not seem to be of the quality that they once were. I get a lot of errors on some WD drives sooner than expected. Hopefully these Seagate drives fair better. Anyhow, so far so good.
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Reviewed in the United States on June 2, 2025 by Amazon Customer for a really long time
Style: HDD
Capacity: 8TB
Color: NAS
I was originally using two Seagate Ironwolf NAS 6TB drives in a Cenmate 2 bay enclosure. I use them in normal mode, which makes it so each drive is seen by the system as an independent drive with it's own drive letter. I do this so HDD #1 is my main data drive, then I use dSynchroniize to sync the data to the other "spare" drive. I exclude hidden and system drives. By doing this, I have better control over damaged files being synched... like MFT. My drives were 5 years old and had been used heavily during that time streaming plex. One ended up with a bad sector, right where the MFT was. I removed it, kept using my data on the other good drive while I ordered this 8TB drive. This one arrived, I threw it in, formatted it, synched all data to it. Now it is my primary data drive that synchs to the other 6TB (older) drive. So far, it works. No problems. disk info shows it's the first time powered on and zero hours. disk mark shows a better speed than the 5 year old 6TB drive does. The 6TB drive shows about 220 MB/s read while this is at 263 MB/s read. Not a huge difference, but not a tiny difference either.
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Reviewed in the United States on June 2, 2025 by Speedy Geek Speedy Geek
Style: HDD
Capacity: 8TB
Color: NAS
It is a mechanical hard drive; not much else to say. It works as a mechanical drive should and has been doing its job in my computer for several years without any problems. Speed is fine for a mechanical drive. It has remained silent and fully operational.
Reviewed in the United States on June 13, 2025 by Thomas Hansen
Style: IronWolf Pro
Capacity: 8TB
Color: NAS PRO
He comprado 5 Seagate IronWolf Pro Enterprise HDD NAS de 8 TB, hasta el momento todos han llegado en perfecto estado y con un funcionamiento correcto. Los he instalado en un NAS TS-932PX de QNAP y no he tenido ningun problema con ellos hasta el momento. Ademas, cumple con lo que se indica en la descripcion del producto.
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Reviewed in the United States on June 9, 2025 by Elias
Style: IronWolf Pro
Capacity: 12TB
Color: NAS PRO
I ordered two of these drives (ST12000NT001). They work very well and are very quiet in a be quiet 802. They do not have the 5-second click that I read WD Black drives have. Unfortunately, one of them died (post-return date). I have spent many hours working with Seagate to get a replacement drive. They have kept trying to send me an IronWolf (non-Pro) drive (ST12000VN0008). I received the first drive and was ready to send it back, but they tried to send another non-Pro drive. Apparently, they are out of stock, so their system wants to downgrade my drive. I even mentioned that Amazon has them in stock if they want to buy one for me. :) It is a great drive when it works, but the return system is rather lacking which can play into the decision to purchase future drives. The people I have spoken with via the support bot have been very nice. The down side is that the system wants to give me a lesser model. If you need to return yours, watch carefully on what the replacement is. Report Card (if Amazon allowed split scores): - Drive: A (when it works) - Support staff: A (very polite and helpful but a bit uninformed by Seagate on how to handle odd cases) - Support system: F (Seagate *really* needs to fix its process, so the correct drive is sent in the first place) Update (2024/2/29): Seagate still cannot find a replacement IronWolf Pro drive to send me. I have spent hours on chat with different people. The last two times I contacted Seagate, I have received the "check back in 48 business hours" after being in a chat for more than two hours. The killer is that they have that unit available on their own website for sale. I have given the support people high ratings each time, yet the "Would you recommend Seagate?" question keeps dropping. I am now dropping my rating here from three to two stars. Update (2024/4/1): It continues. Seagate sent me another incorrect drive. I am currently speaking with support. The best they can do is find an NE001 model even though they have the NT001 models in stock at Amazon and Seagate. They say they can only provide Factory Certified and not new drives under warranty. However, they had plenty of time to refurbish the drive I sent them. I know they cannot just send me back the same drive, but I am very frustrated. Knocking the review down to one star. I doubt I will buy another Seagate drive at this point. It is too much hassle. Update (2024/6/19): A bunch more back and forth has happened. I received another incorrect drive. There was confusion on the status of my RMA. Some thought it was finished probably due to how long the information in the ticket was. Finally, I got in touch with a support person that was able to find the right group above her to handle it. They told me, via her, to keep the incorrect drive, and they would send a new drive. Well, it was another refurbished drive, which is what I expected at the beginning of this, yet it was the correct drive. Checking the warranty on the drive showed it to be only a few months, so I had to contact support again to rectify it. At first, they bumped it to three years. He had me check their site to verify it was correct but was quick to fix it to five years. Seagate should make their own drives easier to differentiate if even their own support can be confused. My head hurts. :) At long last, I have the correct replacement drive. It only took 4 months. Ugh! Update (2024/7/5): Three weeks. That is how long the replacement drive lasted before it crashed. Update (2024/7/30): Not as much difficulty this time, although spent hours on it, another replacement drive is on its way. Update (2024/8/5): The replacement drive was DOA. Of course.
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Reviewed in the United States on February 22, 2024 by Sean F.