I did precisely this too, as I needed storage for a few thousand hours of video footage I’d shot for a documentary, needed it now, and nobody had anything other

I did precisely this too, as I needed storage for a few thousand hours of video footage I’d shot for a documentary, needed it now, and nobody had anything other than external HDDs in any kind of useful size. I was really careful - I had two NASes, each with raid 5 volumes holding a full copy of the footage, as it was irreplaceable. I got up one morning to find a disc had failed in one of them. Swapped it. During the restripe, another failed. Oh well, I have the other NAS, I thought, and after replacing the busted disks and reformatting the failed one, started copying the data over again - and then a disk failed in the backup nas. And then another. And then another in the previously failed one. And that was that. Five disks, all dead, within a day of each other, all the same model. The WD drives in them were all absolutely fine. I haven’t bought a seagate drive since, and never will again.