https://www.anandtech.com/show/15878/western-digital-cleans-up-the-red-smr-nas-hdd-mess tl;dr - DON'T BUY WD REDS.The basic Red drive is now SMR end of. If you want what was the old CMR Red that's been re-branded as Red-Plus. And the Red Pro is still the expensive CMR Pro drive.
Cheers, Wol
