Lenovo 6241, Инструкция по установке и обслуживанию

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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” on page 100, “Installing a 1400-watt or 900-watt
hot-swap power supply” on page 107 and “Installing a 750-watt -48 volt to -60 volt dc power supply” on
page 102.
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:
Notes:
• 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” on page
137.
• 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” on page 158.
• 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” on page 158
• Power supply error LED: When this yellow LED is lit, it indicates that a power supply error has occurred.
Jumpers, switches, and buttons on standard I/O book board
This topic provides the location and information about the jumpers, switches, and buttons on the standard I/
O book board.
The following illustration shows the location of the switches, jumper, and button on the server.
Note: If there is a clear protective sticker on the top of the switch block, you must remove and discard it to
access the switch.
Chapter 1
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The Lenovo System x3850 X6 and x3950 X6 Type 6241 server
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