No worries
I installed them in my DS420 Plus to replace two drives of the same brand but much smaller.
They are fully recognised and have enabled me to increase my storage capacity.
They don't heat up (34°C according to DSM), and I don't find them particularly noisier than the other drives in my NAS (Seagate 4TB drives, but not the same model (ST4000VN008)).
Surprisingly, they're a lot thinner than my previous models.
I'll have to wait and see, but I've never been disappointed by the brand and it's been going for over 10 years now.