Installing and Removing Components
Removing a PDU
Removing a PDU
Procedure
Step 1 Partially remove all installed power supplies. If a power supply is seated into the PDU, removal is difficult or impossible.
Step 2 Loosen the captive screws.
Step 3 Pull the PDU clear of the chassis by pulling on the captive screws. Support its weight from below.
Installing and Removing FEXes
The chassis houses two FEXes (Cisco UCS 2104XP, UCS 2208XP, UCS 2204XP) that allow the blade servers in the chassis to communicate with Cisco UCS fabric interconnects. FEXes can have either four or eight I/O ports.
Note A FEX is sometimes referred to as an “I/OM” or IO Module.
FEX Upgrade Considerations
Before you install a pair of UCS 2208XP FEXes to an existing UCS chassis using a pair of UCS 2104XPs, or add a new chassis with a pair of UCS 2208XP FEXes to a UCS instance you must perform a full upgrade to UCS software version 2.0(1) or later. The UCS 2208XP FEX is not recognized by earlier software releases.
Before you install a pair of UCS 2204XP FEXes to an existing UCS chassis using a pair of UCS 2104XPs, or add a new chassis with a pair of UCS 2204XP FEXes to a UCS instance you must perform a full upgrade to UCS software version 2.0(2) or later. The UCS 2204XP I/O Module is not recognized by earlier software releases.
Upgrading from a pair of UCS 2104XP to a pair of UCS 2200 series modules should be done first on the FEX connected to the standby Fabric Interconnect, standby should be made active, then the FEX connected to the new standby Fabric Interconnect can be upgraded.
If you are also performing an upgrade on the fabric interconnects, perform the upgrades separately. Attempting to upgrade both FEXes and fabric interconnects in a single process will likely complicate any reconfiguration needed on the FI ports.
Adding any M3 model blade server may require an upgrade from UCS 2104XP to UCS 2208 series FEXes. M3 blade servers use newer MLOM and adapter card models that are not fully compatible with the older FEX model.
Before you disconnect any data cables, make a record of which FEX ports are connected to which Fabric interconnect ports.
Cisco UCS 5108 Server Chassis Installation Guide
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