Instructions
1. First, save config, this is so the config is reloaded as is when you power back up. command is below:
copy running-config startup-config
2. Can also save a copy of config off switch to an ftp/tftp/scp server using the following command. This is not required, but would be good to keep a copy off switch in the event the supervisors didn't recover for some other unexpected reason.
copy run ftp://ftpipaddress/running-config.txt
3. You can also power off individual switching modules ( where you have fc/FCOE/Ethernet ports). this should help quiesce host traffic on the ports before you shut down the switch, but is not a requirement. you cannot power off the supervisor modules with these commands:
config
poweroff module x ( where x= slot number)
4. To power off the switch, flip the power toggles on the power supplies... there is no power button on the system.