https://www.servethehome.com/wd-red-smr-vs-cmr-tested-avoid-red-smr/2/   Update: Multiple Class Action Suits Over WD’s SMR Hard Drives Filed in US and Canada https://www.tomshardware.com/news/wd-class-action-lawsuit-smr-hard-drive-us-canada   Also see Patrick Kennedy's April 26, 2020 video here: https://www.youtube.com/watch?time_continue=12&v=gSionmmunMs&feature=emb_logo   Interestingly Seagate claims its IronWolf and IronWolf Pro NAS drives