Installing 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:
v Make sure that the devices that you are installing are supported. For a list of
supported optional devices for the server, see http://www.ibm.com/systems/info/
x86servers/serverproven/compat/us/.
v 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 http://www-03.ibm.com/systems/bladecenter/resources/
powerconfig.html.
v 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.
v 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.
v 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” on
page 145)
The following table lists the system status when you install 460-watt power
supplies in the server:
Table 12. 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
v Power supply 1 is the default/primary power supply. If power supply 1 fails, you
must replace the power supply immediately.
v You can order an optional power supply for redundancy.
v 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.
v 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:
112 System x3650 M3 Types 4255, 7945, and 7949: Installation and User’s Guide
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