Powering the Host On and Off
This section describes the server power on/off states.
Your server has three power modes (states): Power off, Standby power, and Main power.
| Power State | Description | Indicators | Action |
|---|---|---|---|
|
The server is completely powered off when the AC power cords are disconnected. |
All indicators are off. The server is disconnected from all power sources. |
Disconnect all four power cords to completely remove power. |
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When the server is in Standby power mode, the service processor is powered on but the host is powered off. |
The green system System OK indicator blinks slowly. The green SP OK indicator is steady on. |
If the server is completely powered off, plug in all four power cords to apply Standby power. If the server is in Main power mode, use Oracle ILOM or the Power button to remove host power. On dual 4-socket systems, complete this action for both servers. You can power the host off gracefully, or immediately. |
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When you power on the host, the server enters Main power mode. |
The green System OK indicator is steady on. On single 4-socket and single 8-socket systems,only the System OK indicator for System A (SMOD0) is lit. |
Use Oracle ILOM or the On/Standby button to apply host power. On dual 4-socket systems, you must complete this action for both servers. |
Caution:
Equipment damage. Do not disconnect power cords when systems are in Main power mode. Place all systems in Standby power mode before disconnecting power cords.
Caution:
Data loss. To prevent data loss, prepare the operating system for shutdown before you immediately power off.
For instructions on powering the host off and on, see the following procedures: