I own four identical ones and they all work perfectly. Quiet, stable speeds and normal temperatures during large file transfers.
They have 4 years and 4 months of continuous operation, 100% health, which says it all about the quality of this particular model.
The "secret" with mechanical drives is not to keep doing power cycles all the time, that is, turning them on and off.

Noisy. I use it in a Qnap NAS and I hear it every time it reads. Otherwise, very good so far, I've been using it for two months now.

Quite fast in file transfers.
I got it for storing Videos/Photos.
The transfer from the other hard drive to this one was very fast.
Time will tell how long it will last.

Today I received and started setting up applications and transferring files to the new QNAP I received. It's quite fast but also quite noisy... I haven't heard such intensity from a disk in a while... I also have the old NAS (Synology) next to it with two disks and it rarely makes any noise, and even then it's minimal.

Other than that, it's fine

Reliable disk for NAS. It makes a little noise during file transfer but it is highly recommended for use in NAS (and not only).

After one year, it has not presented any problems on a system with Windows 10, AMD Ryzen 7 3700X 3.6GHz, Asrock B550 Phantom Gaming 4

The first disk I received was Dead On Arrival. It NEVER worked!!! The second disk, as a replacement for the first, seems to be OK, fast and silent. I will update my opinion after a few months of use.
24/7/2022: After one year, it has not shown any problems.
16/5/2023: It's been almost two years and its health is at 98%, according to the specialized program HD Sentinel Pro.
31/3/2024: At three years, its health remains at 98%, just as it was 10 months ago.
28/7/2025: Still perfect (98%), just like a year ago, with 65% full...

Purchased for desktop use, it has proven reliable so far.
It operates for many hours a day, almost full at 8TB.
The only negative is that it is noisy, but that is a matter of my own use with the computer on my desk.

I bought the disk in November 18th, I waited quite a bit (received it in December) but it was worth it.
I bought it for 220E, replaced the 4TB in my system, got one for starters and will get another one.
It's cool, very fast. No comparison to Archive or regular Barracuda. Of course, the downside is that it's not completely silent, the head in read-write is mainly quite audible, but both the PC and the room are completely silent, probably in another environment it may not be noticed at all.

As for reliability, time will tell.
P.S. 2021
The disk continues to work flawlessly (NV0022)

There are also NV004 disks in the system, equally reliable.

I have two Ironwolf 8TB drives in a NAS and in RAID 1 for almost a year. No complaints. I didn't expect anything faster since the gigabit ethernet sets the limits on my setup's speeds.

I have 8 disks, I have had them for about 4 months, so far no problem, they are (for engineers) quite silent, fast and if we continue like this without problems I will be very satisfied. In recent years, Seagate has improved a lot. The future will show