Power Supplies - IBM System x3850 X6 Installation And Service Manual

Power supplies

Use this information for an overview of the type of power supply modules that the
server supports.
About this task
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" on page 104, "Installing a 1400-watt or 900-watt
hot-swap power supply" on page 110 and "Installing a 750-watt -48 volt to -60 volt
dc power supply" on page 106.
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:
v The server default power supply configuration setting, when shipped from the
v You cannot mix ac and dc power supplies in the server.
v The server supports ac power supply configurations at both 220 V ac and 110 V
v The power supply bays are divided into two power domains. Power supply
v You must use a power-supply spacer when installing the 750-watt -48 volt dc
The power supply modules have the following LEDs:
v AC power LED: Each hot-swap power supply has an ac power LED and a dc
v DC power LED: Each hot-swap power supply has a dc power LED and an ac
v Power supply error LED: When this yellow LED is lit, it indicates that a power
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System x3850 X6 and x3950 X6 Types 3837 and 3839: Installation and Service Guide
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" on page 143.
ac.
bays 1 and 3 are in power domain A and power supply bays 2 and 4 are in
power domain B.
power supplies and the 900-watt power supplies.
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" on page 165.
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" on page 165
supply error has occurred.