I was getting lot a email from server with the error message raid-status non-stop even though I did not have a raid system. Below simple step, to disable the raid-status message (email).
Two commands that will tell you to how to remove raid status message.
Basically, this is a raid status update from service mpt-statusd and it report all state changed even you do not have a raid system.
To disable the message from log file and to stop getting email, as root, execute the following command.
Stop the service first
And then, disable the daemon mode so it will not start again when you restart the server
echo RUNDAEMON=no > /etc/default/mpt-statusd