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Cisco UCS C24 Server Installation and Service Guide
OL-26647-01
Chapter 3 Maintaining the Server
Installing or Replacing Server Components
Replacing a Drive Backplane
Note The Small Form-Factor (24-drive or 16-drive) and Large Form-Factor (12-drive) backplanes are
factory-configurable options. When replacing a backplane, you must replace it with the same version of
the backplane.
To install or replace a drive backplane, follow these steps:
Step 1 Prepare the server for component replacement:
a. Power off the server as described in the “Shutting Down and Powering Off the Server” section on
page 3-6.
b. Slide the server out the front of the rack far enough so that you can remove the top cover. You might
have to detach cables from the rear panel to provide clearance.
Caution If you cannot safely view and access the component, remove the server from the rack.
c. Remove the top cover as described in “Removing and Replacing the Server Top Cover” section on
page 3-7.
d. Remove the front chassis panel as described in Removing and Replacing the Front Chassis Panel,
page 3-8.
Step 2 Remove all drives and any empty drive trays from the server.
Step 3 Disconnect all cables from the backplane.
Tip Label the cables as you remove them to aid replacement.
Step 4 Disconnect all cables from the SAS expander card.
Step 5 Remove the two screws that secure the backplane assembly to the chassis floor (see Figure 3-8).
Step 6 Lift the backplane assembly, including steel tray and expander card straight up from the chassis.
Step 7 Remove the SAS expander card from the backplane assembly:
a. Remove the three screws that secure the SAS expander to the backplane assembly steel tray (see
Figure 3-9).
b. Pull the SAS expander from the sockets on the drive backplane and then set the SAS expander aside
on an antistatic surface.
Step 8 Install the SAS expander card to the new backplane assembly:
a. Push the two connectors on the SAS expander into the two sockets on the backplane assembly.
b. Install the three screws that secure the SAS expander to the backplane assembly steel tray (see
Figure 3-9).
Step 9 Align the new backplane assembly within the chassis walls, and then lower it evenly to the chassis floor
until the screw-holes in the assembly align with the corresponding screw-holes in the chassis floor.
Step 10 Install the two screws that secure the backplane assembly to the chassis floor.
Step 11 Reconnect all cables to the SAS expander.
Step 12 Reconnect all cables to the backplane.