

💼 Elevate your data game with Seagate’s powerhouse storage!
The Seagate Desktop 8TB External Hard Drive (STGY8000400) offers a robust 8TB mechanical HDD with USB 3.0 connectivity, delivering reliable 100-150 MB/s transfer speeds. Compatible with Windows and Mac, it features plug-and-play ease, an 18-inch USB cable, and an 18W power adapter with global plug options. Designed for professionals needing massive, secure backup and archival storage, it balances capacity and performance in a sleek black 3.5-inch form factor.


























| ASIN | B07CQJBSQL |
| Are Batteries Included | No |
| Best Sellers Rank | 258 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 6 in External Hard Drives |
| Brand | Seagate |
| Colour | Black |
| Customer Reviews | 4.3 4.3 out of 5 stars (17,202) |
| Date First Available | 30 Jun. 2018 |
| Form Factor | 3.5-inch |
| Guaranteed software updates until | unknown |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Rotational Speed | 5400 |
| Hard Drive Interface | USB 3.0 |
| Hard Drive Size | 8 TB |
| Hardware Platform | Mac, PC |
| Item Weight | 1.1 kg |
| Item model number | STGY8000400 |
| Manufacturer | Seagate |
| Operating System | Windows®10, Windows 8, Windows 11 |
| Product Dimensions | 11.81 x 4.14 x 17.93 cm; 1.1 kg |
| Series | STGY8000400 |
A**L
The ultimate external HDD for making backups
Works great and is very easy to set up. Quite noisy and you can feel the ticks within my desk. You have to use the enclosed PSU (not a generic 12v HDD PSU) because it uses a lot more power than other HDD's, but of course, 26TB means you can give away all those old units! The PSU comes with a variety of pin adaptors for every plug on the planet, including EU, UK, Oz and US. I have purchased this purely to backup my main file server and store it off site. To initially copy 21TB took about 30 hours and once initially copied, the weekly update takes about 15 mins, so quite nifty and perfect for my application. I personally, would not use this as a permanently connected drive, its a bit too big, noisy and clunky (and of course 26TB is way beyond a USB connection!), a built in drive is better for speed, power, ventilation, vibration proofing etc. and this drive is probably the ultimate for being able to transport that data in a safe secure manner. You will need something with lots of memory to connect to it because chances are that 26TB of data will probably be over a million files! Make sure windows is set to 'Not indexed' and your anti virus scanner is configured to 'not check' when connected because something this large in capacity takes hours not minutes (and my PC is 5.6 Ghz, 32G RAM so no slouch!)
M**G
Fantastic HDD drive all round and solid read/write speeds. Good value for money and very reliable!
A solid HDD drive with a massive storage space. I've been buying Seagate HDD's for a long time and they have never failed me. I trust the brand and this purchase was no different. Easy to use, just plug and play and the drive is pre-formatted in NTFS. The write speeds are solid at 100-150 MB / Second and the read speeds are quite good too. Have a number of 4K resolution videos and ton's of photos which I have stored on the drive and experienced no lag in reading them from the drive.
J**M
Good external hard drive.
Good capacity, easy plug&play. Good value for money when it's on sale or under discount. Use for backups and decent connection for read/write and file transfers. Good reliable brand.
M**Y
Storage capacity
It arrived fast , out of the box, plugged and started without any problems but I ordered 6tb device . But it is actually 5.45 tb . I understand that may be the balance taken up for it's software but if I knew that I would have bought 2 x 4tb my passport ,which they are much smaller and no need for power supply, much portable and less noisy. Disappointed with the storage capacity, early days just used it for one day so far. I didn't want to send it back because had already started using it . It would have been nice to have a travel case of some sort. I must say ,so far so good . I bought Seagate because already have a 4tb, which I have had for 7 years and it is now full.
T**R
Great backup drive.
Works well and is fairly fast. Massive storage capacity. Haven't had it long, but so far all is good.
B**Y
Utter Rubbish and Cannot Be Trusted
I ordered this item (the 6GB version) on the 3rd of July 2025 in order to move a large number of files I did not have room for on my laptop, and which were causing it to slow down, but that I wanted to keep. Today is the 3rd of September, just two months later, and I have switched on my laptop to find it not only frozen, but when I did finally get into it, various changes I did not make myself to my laptop, and this hard drive beeping and disappeared from my laptop, along with all of the files stored on it. So this hard drive is about as much use as a chocolate donkey, as far as keeping your files safe, and storing them externally. It also apparently makes changes to your devices, without your consent, and without your knowledge. I had various items and files stored on my desktop, including a screensaver, which have also completely disappeared, which were in no way connected to this hard drive, and were stored on my laptop itself. There is zero reason for any of this to happen. The hard drive has just been sitting on my desk the entire time, and there were zero error messages and nothing has changed. It just suddenly started beeping today, and on switching on my laptop I found it frozen and the desktop altered and files missing. There are no help screens, error messages and no way to access it to actually find out what has occurred either, so super helpful. I have already got my money back, but that's not really the point is it, the point is that I have lost all of my files, as have others, and that this product cannot be trusted for its one job. Literally its one job, and not even over the ridiculously short period of two months, and it's not as though this product is cheap either. If you cannot trust it, then it defeats the object of having it. If you're looking for a completely useless piece of black plastic, that wastes your time, energy and money, loses your files, makes changes to your laptop/computer without your knowledge or permission and costs you more than it is worth, I highly recommend this piece of rubbish. Update: this hard drive was sent back to Seagate, as per their "Data Rescue Services" guarantee, and despite absolutely nothing happening to it, and it just completely failing from merely sitting on my desk for a few months, weeks later they wrote to me to say nothing could be done to save any of my data so they would be scrapping it. They then sent me a replacement hard drive, which then failed before I had even had time to move files onto it. Not that I either had any files left, or felt inclined to do so anyway. During the time the first hard drive failed, I also had an issue with my broadband and had no broadband for months, so this hard drive was meant to be a back up for the fact that I was unable to save documents to the cloud. With both failing simultaneously, I lost all of my files. I'm still infuriated daily by discovering files I've lost that were moved to this hard drive during this period, and today was yet another day I went to find some files and discovered they were a whole bunch and weeks of work that were lost to this hard drive. So I came to update this review to advise you, in case you were wondering, that not only is this hard drive utterly useless, the "Data Rescue Service" is completely worthless too.
R**V
Seagate Hard drive.
A great desktop hard drive, it enables me to backup my computer, as it has plenty of space, thank you.
H**N
value for money , and still works fine
still going strong and storing tens of thousands of pictures reliably , what more could you ask
M**A
Achei o produto excelente pois formatou em NTFS (veio formatado como exFAT); como uso para fazer backup de muitos arquivos pesados precisou ser no formato NTFS que é compatível com o PC. Estou fazendo o backup plugando o HD através da USB 2.0, apesar de ter percebido que no USB 3.0 é muito mais rápido, porém para não dar problema de salvar os arquivos, prefiro fazer de forma mais lenta. O produto chegou muito rápido que esperava, adiantando em 5 dias úteis para receber. Até agora não deu nenhum erro das trilhas do HD e a capacidade dele me satisfez. Mais para frente quero comprar outro igual.
C**R
Don't be fooled .. saving your info to the 'cloud' .. is just sharing to someone else's computer. Save everything on your own devices and share not with who knows who's out in the aether. Privacy is privacy and this is how you do it.
B**Y
Great service and so far a perfectly extra storage backup hard drive....it is perfect for all my photos. The seller was amazing.......my item arrivede earlier than expected..it I would order again!
A**N
Funktioniert, wie von Seagate erwartet,einwandfrei. Sehr gute Performance.Passende Größe 4TB war kaufentscheidend, dem Trend zu immer größeren, Speichermedien >6/8/TB zu entgehen und damit erhöhten Service- und Backup-zeiten.
N**L
Good ratio price/capacity.
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