[CentOS] smartctl question

I had a drive failing on a server. I've replaced it. The old drive was
/dev/sdb; the new one's /dev/sdd. The manpage and googling are failing me
- anyone know how to tell smartd to stop trying to read /dev/sdb (which
I've pulled, and is sitting here on my desk)?  I don't need the garbage in
the logs, and no, I can't just reboot the server, since it's a home
directory server....

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