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The Seagate Expansion 20TB External Hard Drive combines massive desktop storage with USB 3.0 high-speed connectivity, delivering up to 120MB/s transfer rates. Designed for effortless plug-and-play use on Windows and Mac, it includes Rescue Data Recovery Services and a 3-year warranty, making it a reliable choice for professionals needing vast, secure, and fast data management.







| ASIN | B0B2PZWD81 |
| Additional Features | Data Recovery Service |
| Best Sellers Rank | #12 in External Hard Drives |
| Brand | Seagate |
| Built-In Media | Expansion Desktop External Drive 20TB USB3.0 |
| Cache Memory Installed Size | 20 |
| Color | DESKTOP |
| Compatible Devices | Desktop |
| Connectivity Technology | USB |
| Customer Package Type | FFP |
| Customer Reviews | 4.2 out of 5 stars 4,015 Reviews |
| Data Transfer Rate | 480 Megabits Per Second |
| Digital Storage Capacity | 20 TB |
| Enclosure Material | Plastic |
| Form Factor | 3.5-inch |
| Global Trade Identification Number | 08719706043700, 10763649174491 |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Form Factor | 3.5 Inches |
| Hard Disk Interface | USB 3.0 |
| Hard Disk Rotational Speed | 7200 RPM |
| Hard-Drive Size | 20 TB |
| Hardware Connectivity | USB 3.0 |
| Hardware Platform | Linux, Mac, PC |
| Installation Type | External Hard Drive |
| Item Type Name | Seagate |
| Item Weight | 1176 Grams |
| Manufacturer | Seagate |
| Media Speed | 120 Megabytes Per Second |
| Mfr Part Number | STKP20000400 |
| Model Name | Expansion Desktop |
| Model Number | STKP20000400 |
| Number of Items | 1 |
| Read Speed | 120 Megabytes Per Second |
| Special Feature | Data Recovery Service |
| Specific Uses For Product | Office |
| UPC | 763649174494 |
| Unit Count | 1.0 Count |
M**I
It works well for me, for now atl.
Great, for local storage either networked or not. Recommend replacing their garbage usb cable that comes with it (cable matters makes a good one). Pretty silent under low operation, speed is usb. Lifespan with seagate is hit or miss. I’ve had drives from them last a couple days and I’ve had drives last nearly a decade so hardware gambling. Wouldn’t recommend anything sensitive going on it, if it dies it’s gone. I use mine paired with a local caching machine for windows and steam updates. (Games too) it runs on the network via that “server” and as I learned when dealing with mechanical drives, don’t put stuff on it you can’t afford to lose. Was getting 460ish MB/s average read and 390ish MB/s write with your peaks and dips associated with HDD madness.
A**R
Love this HDD thus far.
The 24 TB external HDD USB 3.0 works great thus far. It has a write speed of about 200 Mb per second. It is not very noisy in my opinion. It is compact for such a large storage device. I paid $259 for it when it was on sale...that's $10.79 per terabyte. Retail price appears to be $358 for it. It transfers MP4 videos with no problems. Hard Drives do wear out with use, so I'm not sure how long the drive will last. Also there is a risk in storing so many files with the possibilities of the drive failing in the future. So it would be very wise (in my opinion) to partition the drive and in smaller terabytes amounts. The file system is in exFat format which allows for storing large files. It Is important to partition it first before use if you plan to partition it...not after being used.
M**J
Good price and good option for high-cap storage
This drive operates reliably and performs as expected. Deployment was straightforward, making it a solid option for anyone needing high-capacity storage at a reasonable cost. The speed and durability have been more than sufficient for my daily use so far.
B**.
What a pain!!! Not worth it! Avoid at all cost!!
Hot garbage! Yeah sure it was cheaper and had more storage space than the competitors but I should’ve just bought other brands. Less than a month it just stopped working and started beeping….meaning hardware failure. Customer service is all bots then “human” via chat. I would be better off just burning my device to get anything. Slow to respond asking questions I literally told the answers in the initial what is wrong today. Asked if dropped recently. Ok if that’s your go to question maybe make it so it doesn’t stop working if it was bumped or dropped once. Other brands don’t seem to have that issue maybe put in better casing. Just a thought. I will send away and hope for the best and see what I get 30-45 business days from the day they receive. Update 1: When I setup the recovery I was given a choice to receive a hard drive with any recovered data (size of hard drive matches size of the recovered data) and either a replacement hard drive of one you purchased or the guts of your old drive which will cost you import fee and not have the casing. So far I have an update that they received my device but so far haven’t started to scan to recover data. I received my replacement hard drive that didn’t come in a box as if sold in the store and the outside of the box said refurbished. So basically you pay for full price new item it crashes you may get your data recovered or not but get a refurbished item replacement which typically costs less. I tried to return refurbished one because I paid full price for a new one and they said because it’s over 30 days (only because it took awhile for them to mail me my replacement so over 30 days maybe by a week or two) they won’t accept return per Amazon policy and take it up with the manufacturer directly…which I will but after I see if they recover any data I wouldn’t want to tempt them to “attempt and not be able to recover anything “…this is frustrating… Update 2: Got notice about 60 days or so after sending away the device that no data was recovered…shocking I know. It gets worse so I was able to start piecing my life back together slowly using recovery software on my other hard drives to recover some of the data I had moved to this product and then boom the replacement (a refurbished product) boom just crashed and died. This now is the third Seagate device I owned that crashed and died in my life, never had WD crash. I am asking for a refund from customer service at the Seagate and got asked to show proof of purchase and said I was eligible for refund and that they were processing it to then quickly say to rebuild your confidence in our product can I interest you in a new build? Apparently it’s sorry for your frustration twice but hey give us another chance to prove you right about us….I asked to talk to the supervisor as maybe they have authority for a refund and got the same run around. Ugh!!! So now gotta send it away to get a replacement that probably will die again. Take it from me don’t buy it!!
C**S
Good for a NAS build...
The external hard drive enclosure is slightly bigger than the actual hard drive itself. In my experience it has an okay speed. Not the fastest drive that I've used. The USB port is a normal usb-a 3.0 port so no usb-c. The power source has multiple adapters for people who would use it for their travels so no matter what kind of power outlet it present you should be okay. The design of the external case has openings to vent the heat coming from the actual hard drive inside. In terms of security, the drive is held in my rubber pads within the external enclosure that are surrounded by plastic tabs that hold it in. The external hard drive is a good choice to use for a NAS build if you are comfortable shucking the external case. The price is competitive when compared to a normal NAS internal drive. If you choose to go that route bear in mind that shucking the drive comes at the risk of voiding the warranty. Overall it's decent and has been running well on my NAS. The okay speed on the drive is the limiting factor which is why it's 4 out of 5 stars. Lastly the actual enclosure itself will still run other old drives if the ribbon cable and board aren't damaged during the shucking process. Any old 3.5 internal drives would work perfectly to recycle and not throw out the remaining hardware.
T**Y
It’s clicky-clacky loud, but that’s OK
The transfer of the data is quick, but that’s kind of depending on what you’re doing and what cord is plugged in between your laptop and this hard drive.. I got a different cord that came with the hard drive that was able to transfer data a little quicker. However, I really like the drive. I was able to put16 external hard drives on it. And yes, it makes a lot of noise when it’s running, but I’m users to a noisy drive, considering I’m 63 and I’ve been using computer since the late 80s. Heck, besides being really noisy… Drives back in the olden days were something like $125 for 125 MB of space for your data. Well it’s not fast enough for games and things like that, however I found it very reliable and it fits on my desktop quite neatly.
K**H
it requires external power and a usb
not the fastest but def gets the job done! As a person who records up to 800 videos a week its perfect, I don't regret it and id purchase it again
B**N
Workhorses For Backup Service
For at least a decade, I've been using various flavors of this drive for dedicated backup and and archive duties for four separate workstations. Two of those are dedicated to accounting and tax work, two to an engineering consulting practice. The accounting and tax stations get twice-daily incremental backups during tax season, so the drives stay pretty active. The drives are moved to safe storage when they get full, and a new image set is started. Not the toughest duty really but extremely critical. These are easy plugins to USB 3 ports. Performance isn't as important as reliability, so spinning USB drives like this are more than sufficient. There have been enough file recovery events over the many years to remind me of the value, especially compared with having to try and recreate lost records. Like many things, the cost of these has at least doubled since the first ones I bought, but just one critical data recovery event easily pays for them all. Recommended for similar duty in your office!
K**R
Great
Great
カ**ー
Win用にフォーマットし直して使っています。
HDDの値上げの情報を知ったので2025年11月時点に無理をして57千円台の時に購入。2026年2月時点で94千円に値上がりしていて良い買い物が出来たと思っています。
R**A
Bom
Bom
R**.
Great pricing and stable transfer speed
What i like about this HDD is the stable transfer speed with power supply unlike other that are unstable transfer speed. Got few TB of data transferred at ease. Only thing that might be a down side is the sound created might be a nuisance but overall it works very well for my heavy data. Will be back if data exceed again!
A**N
Good Capacity & speed for the price. Quality is very good
This is my 5th external HDD from Seagate for personal use, and as usual, the HDD looks and feels premium and the performance is really good. Have Seagate's lying around from 10+ years ago that are regularly used, and still work like a charm. Almost no heat generated, light noise under extreme access (expected), compact size. Overall a great expansion drive. Using it for backing up my primary NAS drive (4x Seagate Ironwolfs)
Trustpilot
2 weeks ago
2 weeks ago