Power Control, Shutdown, And Reset States - Oracle X7-8 Service Manual

Power Off the Server Using the Server OS

Power Control, Shutdown, and Reset States

This section contains information about power modes, server shutdowns, and server resets.
Procedure
Main Power Mode
Standby Power Mode
Graceful Shutdown
Immediate Shutdown
Complete Power Removal
Warm Reset or Reboot
Cold Reset
118 Oracle Server X7-8 Service Manual • October 2017
Description
When the server enters Main power mode, power is supplied to all the server components, the server
boots, and the operating system (OS) functions. This is the normal operating condition for the server.
The Power OK and SP OK indicators are steady on.
To enter Main power mode, press the On/Standby button on the server front panel when the server is
in Standby power mode. You can also enter Main power mode by powering on the server from Oracle
ILOM.
In Standby power mode, low-level power is supplied only to the components required to run the SP.
The OS does not boot.
To enter Standby power mode, either:
■ Connect the AC power cables to the back of the server but do not press the Power button.
■ From Main power mode, either press the front panel On/Standby button, or use Oracle ILOM.
When you connect power to the server, the SP boots. The SP OK indicator blinks while the SP is
booting, then remains steady on once it has booted. The Power OK indicator flashes briefly every 3
seconds.
A graceful shutdown (also referred to as an orderly shutdown) closes files and prepares the file
system before it shuts down the server to Standby power mode. Graceful Shutdown is the safest
method of shutting down the server.
Power down the server gracefully to prevent data from being corrupted. Performing a graceful
shutdown ensures that the system is ready for restart.
To perform a graceful shutdown use the server OS, Oracle ILOM, or the server front panel Power
button.
An immediate shutdown (also referred to as an emergency shutdown) shuts down the host
immediately without closing files or preparing the file system. Immediate Shutdown should be
used only in situations when you know that the chance of losing data is nonexistent or acceptable.
Complete Power Removal
To completely remove power from the server, remove the power cords.
Shutting down the server from Main power mode to Standby power mode does not completely
remove power from the server. When the server is in Standby power mode, it is in a low-power state.
The low-power state maintains the service processor (SP), which runs Oracle ILOM.
A warm reset is a reboot or restart of the server. It requires cycling the server power from Main power
mode to Standby power mode and back to Main power mode. For example, a warm reset might be
required after a software or firmware update or to access the BIOS Setup Utility.
A cold reset of the server is a restart of the server from a completely powered-off state. A cold reset
might be required to resolve a system issue. To perform a cold reset, place the server in Standby
power mode, disconnect the server from its power source by performing a complete power removal
(see above), wait 30-60 seconds, and then connect the server to its power source.