Hi there!
I’m looking for some help with understanding which drive to buy to replace my damaged WD40EFRX. Can anyone tell if this model is CMR or SMR? If it is SMR and I replace it with a CMR model, would the remaining SMR drive be compatible?

Models currently available in Brazil are different from the ones in the US and I can find the EFRX models here, but some of them are labeled as Red instead of Red Plus.
Thanks for your time!

EFRX is CMR On WD Red NAS Drives - Western Digital Corporate Blog

It’s also referred to as WD RED Plus.