Oracle Sun Server X4-4, Service Manual

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Remove Power
Preparing to Service the Server 103
Next Steps ■
“Performing Electrostatic Discharge and Static Prevention Measures” on page 74
Power Modes, Shutdowns, and Resets
This section contains information about power modes, server shutdowns, and server resets.
Full Power Mode
Full power mode is the normal operational mode for the server. When the server enters full
power mode, power is supplied to all the server components, the server boots, and the operating
system (OS) functions. You achieve full power mode by pressing the Power button on the
server front panel when the server is in standby power mode. You can also achieve full power
mode by powering on the server from Oracle ILOM. Once the server is operating in full power
mode, the system OK and service processor (SP) indicators are on steady (see “Server Boot
Process and Normal Operating State Indicators” on page 39 ).
Standby Power Mode
Standby power is a non-operating mode (OS does not boot), in which low-level power is
supplied only to the components that are required to run the SP. To enter standby power mode,
connect the AC power cables to the back of the server, but do not press the front panel Power
button. You can also enter standby power mode by powering off the server (from an operational
full power mode) using one of the power-off methods (see below). In standby power mode, the
SP indicator blinks quickly while the SP is booting. Once the SP has booted, the indicator is on
steady, and the system OK indicator flashes (see “Server Boot Process and Normal Operating
State Indicators” on page 39 ).
Graceful Shutdown
A graceful shutdown (also referred to as an orderly shutdown) is the safest method of shutting
down the server to standby power mode because it warns users, closes files, and prepares the
file system. To perform a graceful shutdown use the server OS, Oracle ILOM, or the server
front panel Power button.