Advanced Lights Out Management (ALOM)
The ALOM is very useful for remotely managing your Solaris server. You should always have it configured and accessible via serial console or network, in the event that you have an unresponsive box that needs a kick. Here are a few useful commands I have found over the years for manipulating the ALOM.
Change the ALOM password from the OS
cd /usr/platform/`uname -i`/sbin ./scadm userpassword admin