Dear Suppport Service,

I tried to check SMART status on WD external HDD with smartctl through USB. And I failed to do that.
Next error message was displayed: Terminate command early due to bad response to IEC mode page. A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options.

What models of external HDDs are supported by smartmontools?
Is external HDD USB connection supported?

Best regards,

Oleksandr Gorobets
SW Engineer
EchoStar Ukraine.