System Overview
The main hardware page lists the system chassis, a summary of its contents, and
any attached disk shelves (on supported systems). This provides an overview of the
hardware present on the system. The power icon 
, located in the upper left of the view, presents a dialog box
to either power off, reboot (power cycle), or reboot the appliance with diagnostics.
Only select the diagnostic reboot option when instructed by Oracle Service personnel
because it could take a long time to complete and could have adverse results if not
performed properly. Do not perform a diagnostic reboot when system-affecting
operations are occurring, such as upgrading firmware, executing commands, and
configuring or unconfiguring storage. The diagnostic reboot option is not available
when using the system chassis power icon.