Power Supply Units (Psus) - Fujitsu Primergy RX900 S2 Operating Manual

2.2.8

Power Supply Units (PSUs)

V
CAUTION!
The server supports a mains voltage in the range of 200 - 240 V. You may
only operate the server if its rated voltage range corresponds to the local
mains voltage.
I
Phase redundancy is possible in regions, where a single phase provides
200 - 240 V; in other regions with lower single phase voltage, two phases
must be coupled and complete phase redundancy thus is not possible.
In the basic configuration, the server is configured with two hot-plug power
supply units in 1+1 redundancy configuration supporting 4 CPUMEMR boards.
Three hot-plug power supply units are needed to support more than 4
CPUMEMR boards in a 2+1 redundancy configuration. One more hot-plug
power supply unit can be installed to achieve AC redundancy in a 2+2
configuration, see
RX900 S2
"Connecting the server to the mains" on page
Operating Manual
Functional overview
71.
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