IBM RackSwitch G8000, Installation Manual

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The Fan LED flashes if there is a failure of one or more fan modules.
AC power supply
The switch has two redundant 150 W AC power supplies. Each internal power
supply has an individual IEC 320 power connector on the rear panel. The power
cord attaches to a universal grounded AC power source. You can replace a
hot-swap power supply module without powering off the switch or disrupting switch
functions.
DANGER
An electrical outlet that is not correctly wired could place hazardous
voltage on the metal parts of the system or the devices that attach to the
system. It is the responsibility of the customer to ensure that the outlet is
correctly wired and grounded to prevent an electrical shock. (D004)
Each power supply can be connected to a separate AC circuit to mitigate the risk of
down time during a power failure. When used in a redundant configuration, the dual
power supplies have a load-sharing capability that enables each power supply to
operate at approximately 50% of full load. Using redundant power can minimize the
power disruption during a power supply failure and extend the expected lifetime of
each power supply by operating normally in a conservative power mode.
There is no power switch on the G8000; the switch unit powers up when power is
supplied through the power cords.
The Power Supply LED indicates the status of the power supplies. The LED flashes
when only one power cord is connected, and is steady when both power cords are
connected.
DC power supply
The DC-powered G8000 has two redundant 160 W DC-DC power supplies,
operating from 42V to 60V. Each internal power supply has a DC filter input on the
rear panel. The DC power sources are connected to the RackSwitch through the
mating connector cable assemblies provided. One end of the cable is connected to
the switch and the three DC-input leads connect the DC-input power supply to the
site power source. The pigtail end of the cable is color coded, as follows:
Table 2. Cable color code
Color Function
Black Negative (-48V)
Red Positive (return)
Green Ground
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IBM System Networking RackSwitch G8000: Installation Guide