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Power supplies

Use this information for an overview of the type of power supply modules that the server supports.

The server supports up to four 900-watt ac power supplies, 1400-watt ac power supplies, or 750-watt -48 volt dc power supplies. For more information about the supported power supplies and instructions on how to install the power supplies, see Installing power supplies, Installing a 1400-watt or 900-watt hot-swap power supply and Installing a 750-watt -48 volt to -60 volt dc power supply.

The following notes describe the types of power supplies that the server supports and other information that you must consider when you install power supplies:

Note
  • The server default power supply configuration setting, when shipped from the factory, is non-redundant mode with throttling enabled for both the ac and dc power supply models. If you want to change the mode to redundancy mode, you must use IMM2 web interface to set and change the power supply Power Policy and System Power Configurations options settings. You can set and change the policies and configurations using the IMM2 web interface, CIM, or the Advanced Settings Utility. You cannot set or change the Power Policy or System Power Configurations options setting using the UEFI Setup utility. For more information, see Setting power supply power policy and system power configurations.
  • You cannot mix ac and dc power supplies in the server.
  • The server supports ac power supply configurations at both 220 V ac and 110 V ac.
  • The power supply bays are divided into two power domains. Power supply bays 1 and 3 are in power domain A and power supply bays 2 and 4 are in power domain B.
  • You must use a power-supply spacer when installing the 750-watt -48 volt dc power supplies and the 900-watt power supplies.

The power supply modules have the following LEDs:

  • AC power LED: Each hot-swap power supply has an ac power LED and a dc power LED. When the ac power LED is lit, it indicates that sufficient power is being supplied to the power supply through the power cord. During normal operation, both the ac and dc power LEDs are lit. For any other combination of LEDs, see Power-supply LEDs.
  • DC power LED: Each hot-swap power supply has a dc power LED and an ac power LED. When the dc power LED is lit, it indicates that the power supply is supplying adequate dc power to the system. During normal operation, both the ac and dc power LEDs are lit. For any other combination of LEDs, see Power-supply LEDs
  • Power supply error LED: When this yellow LED is lit, it indicates that a power supply error has occurred.