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Chapter 3 Installing the Server 3-3
3.2.1 Connecting a UPS Unit
An uninterruptible power supply (UPS) unit 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 UPS with an UPC interface can be connected to the UPC ports on the
eXtended System Control facility unit (XSCFU or XSCF Unit) (
FIGURE 3-2) so that
emergency shutdown processing can be executed.
When using a single power feed, connect the UPC cable to UPC#0. When using a
dual-power feed, connect the UPC cables to UPC#0 and UPC#1 (
FIGURE 3-1).
Note – UPC#1 cannot be used when using single power feed. Refer to the SPARC
Enterprise M4000/M5000 Servers Service Manual for the interface specifications of the
UPC port.