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Seagate IronWolf Pro 20TB - Hard Drive

Reviews Seagate IronWolf Pro 20TB

Interested in reviews of Seagate IronWolf Pro 20TB? It got 4.7 out of 5 stars from our customers. Find specific customer reviews of Seagate IronWolf Pro 20TB below. We will appreciate if you also share your experiences with Seagate IronWolf Pro 20TB after purchasing.
759.90 €
In stock > 5 pcs
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User Reviews

Štefan, Praha 6 - Dejviceflag
Rated 03/03/2026, variant Seagate IronWolf Pro 16TB
Verified purchase
The drive is high quality and fast, the capacity is great, and it's pretty much silent (except for the head rattling). But what is incomprehensible and unacceptable is the state in which the disc arrived. The top metal cover of the disc is visibly battered in several places and the disc must have suffered some pretty solid bumps in transit. And the fact that the disc only comes in an anti-static bag doesn't help either. The drive itself works, but it's hard to say what effect the scratches will have on the operation and life of the drive. I'm beginning to understand why Synology wants to control what its customers put in their NASes as drives. Such treatment of such delicate and expensive goods is incomprehensible and inexcusable by the alza or its suppliers.
Capacity
Speed
Relatively quiet operation
Completely insufficient packaging (only antistatic bag)
The top aluminium cover of the disc is visibly battered
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Anonymous customerflag
Rated 01/03/2026, variant Seagate IronWolf Pro 28TB
Verified purchase
CHECK IMMEDIATELY IF YOU HAVE THIS PIECE I DESCRIBE BELOW A. ) The HDD was supposed to be brand NEW, but upon unpacking I found it to be ASI repackaged goods, with fingerprints and minor scratches in the threads on the contents, as if it was already installed in the computer. That is why I returned the goods immediately. B. ) Eventually we learned that the HDD was non-functional and just beeped and even crashed the test computer. C. ) shock sensitive HDD for 17 thousand CZK was delivered without transport packaging (bubble wrap) D. ) It's not the first time with HDDs, they're throwing it around like it's a miracle E. ) This is a systemic failure of ALZA that has been ongoing for several years F. ) Also, another shipment from the same day was a damaged cardboard box, apparently already opened once, but the goods inside were OK, so I kept it. G. ) KLAD - I returned the HDD immediately and the money arrived within 5 days
Nice service
Refund 17.590, - CZK within five days
Used goods (apparently), I immediately returned
According to Alza technicians, the HDD did not work
Alza has long been unable to handle expensive but sensitive goods such as HDDs etc.
A big waste of time associated with the return
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Anonymous customerflag
Rated 05/02/2026, variant Seagate IronWolf Pro 16TB
Verified purchase
The disk stopped working a month ago. So far, I haven't found anyone who's been able to download data from it.
size
left after half a year of use
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Anonymous customerflag
Rated 28/01/2026, variant Seagate IronWolf Pro 16TB
Verified purchase
Insufficient transport packaging. Ordered 2 pieces, both not working.
Two disks, neither one works. The first one just beeped and didn't turn, the second one has a visibly damaged metal casing and shows no response at all.
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Companyflag
Rated 28/01/2026, variant Seagate IronWolf Pro 22TB
Verified purchase
In addition to the normal read head jerk that all Seagate drives make, this one makes a strange humming noise (like an untuned radio). So it is not very suitable for a PC or NAS that is in the living room, bedroom, etc. It's more suited for servers in a server room or NAS safely stored away from places where it can disturb you.
20TB capacity after formatting
It chirps and buzzes
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Customer, Česká Kubiceflag
Rated 14/01/2026, variant Seagate IronWolf Pro 12TB
Verified purchase - review from a price comparison website
Rất tốt!
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Adam, Nedakoniceflag
Rated 06/01/2026, variant Seagate IronWolf Pro 12TB
Verified purchase
Speed
Reliability
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David, Miloviceflag
Rated 01/01/2026, variant Seagate IronWolf Pro 4TB
Verified purchase
As already written here - ". noise level when placed in a desktop PC. It is not a permanent noise - the plates are not particularly audible. But the noise and drumming that the headers make when they read and write".
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Jiří, Kouřimflag
Rated 25/11/2025, variant Seagate IronWolf Pro 6TB
Verified purchase
I chose as a precautionary replacement for my 7 year old Seagate Barracuda ST4000DM004 4TB, which had already accumulated more than 60,000 hours without error! And also 4TB was already "just right". For being a 5400 rpm SMR drive designed for PC for occasional universal use, it worked really reliably even when running in 24/7 mode for a while. With the new Seagate IronWolf Pro HDD, I was very shocked by the sounds it makes. I have very quiet Noctua fans in my PC, 3 other different HDDs, and I was virtually unaware of the PC when it was on. After installing this new HDD, I feel like I have brought a PC from a museum, because I can constantly hear the drive clattering correctly when reading and writing data as it once did long ago. The diagnostics show no problems, so this will be a feature indeed, unfortunately. Given that adequate competition is described in reviews as having similar performance, I guess I have no choice in this category of discs. So I just hope it will exhibit the same "immortality" as the predecessor I mentioned.
CMR
Price/quality/performance ratio(capacity)
Decent read and write speeds
Low temperatures (30 - 40°C)
7200 rpm. /min
It won't pull a more common sata/usb external adapter even if an external 12V/1A power supply is connected. Of course, it won't even spin without a 12V power supply. It may not be just a disadvantage of the drive though, I don't have a comparison to a more modern or better adapter.
A significant disadvantage is the noise level when placed in a desktop PC. It is not a permanent noise - the plates are not particularly audible. But the noise and drumming that the headers make, I've last experienced that with some server drives where noise is not a consideration or with really old HDDs when they made sizes like 320GB and smaller.
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Alena, Prahaflag
Rated 09/11/2025, variant Seagate IronWolf Pro 4TB
Verified purchase - review from a price comparison website
Nothing
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