Sparc Enterprise M3000, Installation Manual

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Chapter 3 Installing the Server 3-3
2. Make sure that each power cord is connected to the power supply unit and
secured with a cord clamp.
Do not connect the power source yet.
3. Arrange the layout of all cables outside the server, and secure them at the
specified locations to prevent them from being damaged.
4. Make sure that the AC power source circuit breaker is in the OFF position, and
then connect the power cords to the AC power source.
For redundancy in case of a power source failure, PSU#0 and PSU#1 must be
powered from separate sources. For the form of connection of the power cords, refer
to
Section 2.2.1.3, “Facility Power Requirements” on page 2-4 .
3.3.2 Connecting a UPS
An uninterruptible power supply (UPS) is used to provide a stable supply of power
to the system in the event of a power failure or an extensive power interruption. A
UPC port on the rear panel of the server can be connected to the UPC interface on
the UPS so that emergency shutdown processing can be executed safely.
If a UPS is procured, the UPS must have a separate power supply system. Connect
PSU#0 and PSU#1 independently to the systems for AC power supply. (See
FIGURE 3-1
.)
In a connection with 1+1 redundancy, a UPS cable is connected to the UPC 0 port on
the server.
In a dual power feed connection, UPS cables are connected to the UPC0 port and
UPC1 port.
Note – The UPC1 port cannot be used for a connection with 1+1 redundancy. For
the UPC port interface specifications, refer to the SPARC Enterprise M3000 Server
Service Manual .