Installing a hot-swap ac power supply
Use this information to install a hot-swap ac power supply.
The following notes describe the type of ac power supply that the server supports and other information that you must consider when you install a power supply:
- Make sure that the devices that you are installing are supported. For a list of supported optional devices for the server, see Lenovo ServerProven website.
- Before you install an additional power supply or replace a power supply with one of a different wattage, you may use the IBM Power Configurator utility to determine current system power consumption. For more information and to download the utility, go to the IBM Power Configurator website.
- The server comes with one hot-swap 12-volt output power supply that connects to power supply bay 1. The input voltage is 110 V ac or 220 V ac auto-sensing.
- You cannot mix 460-watt and 675-watt power supplies, high-efficiency and non-high-efficiency power supplies, or ac and dc power supplies in the server.
- The following information applies when you install 460-watt power supplies in the server:
- A warning message is generated if the total power consumption exceeds 400 watts and the server only has one operational 460-watt power supply. In this case, the server can still operate under normal condition. Before you install additional components in the server, you must install an additional power supply
- The server automatically shuts down if the total power consumption exceeds the total power supply output capacity
- You can enable the power capping feature in the Setup utility to control and monitor power consumption in the server (see Setup utility menu choices)
Table 1. System status with 460-watt power supplies installed. Total system power consumption (in watts) Number of 460-watt power supplies installed One Two Two with one failure < 400 Normal Normal, redundant power Normal 400 ~ 460 Normal, status warning Normal, redundant power Normal, status warning > 460 System shutdown Normal System shutdown - Power supply 1 is the default/primary power supply. If power supply 1 fails, you must replace the power supply immediately.
- You can order an optional power supply for redundancy.
- These power supplies are designed for parallel operation. In the event of a power-supply failure, the redundant power supply continues to power the system. The server supports a maximum of two power supplies.
- For instructions on how to install a hot-swap dc power supply, refer to the documentation that comes with the dc power supply.
Statement 5
CAUTION
The power control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.
Statement 8
CAUTION
Never remove the cover on a power supply or any part that has the following label attached.
Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician.
To install a hot-swap power supply, complete the following steps:
- If you are installing a hot-swap power supply into an empty bay, remove the power-supply filler panel from the power-supply bay. Figure 1. Power supply installation
- If you are replacing a power supply with one of a different wattage, apply the power information label provided with the new power supply over the existing power information label on the server. Figure 2. Power information label
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