The server can receive ac input from two different ac power sources. If two separate power sources are available, you can plug the server into the separate power sources, increasing system reliability if one power source fails. The power receptacles are located at the rear of the chassis. They are labeled PWR 0 and PWR 1.
You can install a maximum of two bulk power supplies (BPS) in the server. Installing two BPSs in the server provides 1+1 redundancy, meaning that if one BPS fails, there is still enough power supplied to the server for it to remain operational. You must promptly replace the failed BPS to restore 1+1 functionality.
A minimum of one BPS is required to power the server. There is no 1+1 capability if only one BPS is present.
Power States
The server has three power states:
•standby power
•full power
•off
To get to standby power state plug the power cord into the appropriate receptacle on the rear of the chassis. The front panel power button is not turned on.
Full power occurs when the power cord is plugged into the appropriate receptacle and either the power is activated through the iLO 2 MP PC command, or the power button is activated.
In the off state, the power cords are not plugged in.
Table
Table
Power States | Power Cable | Power Activated through the iLO 2 MP PC | ac Voltage | dc Voltage |
| Plugged Into | Command; or Front Panel Power Button | Applied | Applied |
| Receptacle | Activated |
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Standby power | Yes | No | Yes | No |
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Full power | Yes | Yes | Yes | Yes |
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Off | No | No | No | No |
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NOTE: If the power restore feature is set to Always On through the iLO 2 MP PR command, the server can automatically power on to the full power state.
Figure
Figure
Connecting the Cables | 79 |