Both grids in a power redundant system should have the same number of power supplies. If your
system is configured for grid redundancy, slots 1 and 2 are assigned to grid 1 and slots 3 and 4 are
assigned to grid 2. If only two power supplies (PS) are in a redundant- mode chassis, they should be
in slots 1 and 3. Slot and cord connection numbering is shown below.
Figure 32: Power Supply Bay and Connector Numbering
PS 1
PS 2
PS 3
PS 4
Server Slot 1
Server Slot 2
Server Slot 3
Server Slot 5
Server Slot 7
Server Slot 4
Server Slot 6
Server Slot 8
Front
Fan 1
Fan 2
I/O
Module
Slot
1
I/O
Module
Slot
2
Connector
PS 4
Connector
PS 3
Connector
PS 2
Connector
PS 1
Fan 6
Fan 5
Fan 4
Fan 3
Fan 8
Fan 7
Rear
279770
Note
Step 6
Connect the server chassis to the fabric interconnect as described in
Proper FEX and Fabric Interconnect Port
Connectivity, on page 59
.
Installing Rear Brackets
Before shipping a preracked UCS 5108 chassis or UCS Mini chassis, you must install a pair of integration
brackets (RACK-HW-016) to secure the rear of the chassis to the rack rail. The following figure shows the
brackets.
Figure 33: Rear Integration Brackets
Use cage nuts and mounting screws to secure the brackets to the rack rail.
From the rear of the rack, the rear brackets should be installed as follows:
Cisco UCS 5108 Server Chassis Installation Guide
54
Installation
Installing Rear Brackets