The newer WD##EFAX ones are SMR but if your drive is a few years old then it's probably a WD40EFRX which is NOT a SMR drive.
[1] https://www.ixsystems.com/community/resources/list-of-known-...
The 8TB and larger drives use the exact same WD##EFAX model number, but aren't SMR.
The newer WD##EFAX ones are SMR but if your drive is a few years old then it's probably a WD40EFRX which is NOT a SMR drive.
[1] https://www.ixsystems.com/community/resources/list-of-known-...