I know about the "problems" with the SME construction and is just making some experiments
The reason I do this is that I have a backup affa server that is only running aprox 30 minutes during the night.
WOL does not work apparently and I need to install updates somehow.
Currently I have to climb to the addict turn on the server go down to the office and start a terminal send shutdown -c and then install updates. Because of my lazy attitude to life this does not happen so often
May also be possible to achieve what I like in a script. E.g. 'yum -y update' and then the rest of the needed commands like post-upgrade/reboot? and install it via crontab -e
NB: I like to shut the backup server down to save on the power bill