Step 7 Replace the terminal cover as shown. This cover should always be in place when power is applied to the
terminals.
Step 8 Connect the other end of the power wires to a DC-power input source.
Step 9 Set the DC disconnect switch in the circuit to ON.
In a system with multiple power supplies, connect each power supply to a separate DC power
source. In the event of a power source failure, if the second source is still available, it can maintain
system operation.
Caution
Step 10 Verifypower supply operation by checking the power supply's front-panel LEDs. Youshould see the following:
•The LED labeled INPUT OK is green.
•The LED labeled OUTPUT FAILis not lit.
Step 11 Check the power supply and system status from the UCS console by entering the show system command or
theshow power command, do using the GUI. For more information on these commands, refer to the command
reference for your software.
Cabling Considerations for Fabric Port Channels
When you configure the links between the Cisco UCS 2200 Series FEX and a Cisco UCS 6200 series fabric
interconnect in fabric port channel mode, the available VIF namespace on the adapter varies depending on
where the FEX uplinks are connected to the fabric interconnect ports.
Inside the 6248 fabric interconnect there are six sets of eight contiguous ports, with each set of ports managed
by a single chip. When uplinks are connected such that all of the uplinks from an FEX are connected to a set
ofports managed by a single chip, Cisco UCS Manager maximizes the number of VIFs used in service profiles
deployedon the blades in the chassis. If uplink connections from an IOM are distributed across ports managed
by separate chips, the VIF count is decreased.
Figure 14: Port Groups for Fabric Port Channels
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
26 28 30 3218 20 22 2410 12 14 162 4 6 8
1 3 5 7 9 11 13 15
10 12 14 162 4 6 8
1 2 3 4 5 6
330345
Adding a second link to a fabric port channel port group is disruptive and will automatically increase the
available amount of VIF namespace from 63 to 118. Adding further links is not disruptiveand the VIF
namespace stays at 118.
Caution
Cisco UCS 5108 Server Chassis Installation Guide
OL-20035-05 19
Installation
Cabling Considerations for Fabric Port Channels