Replacing A Drive Backplane - Cisco UCS C24 Installation And Service Manual

Installing or Replacing Server Components

Replacing a Drive Backplane

The Small Form-Factor (24-drive or 16-drive) and Large Form-Factor (12-drive) backplanes are
Note
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:
Prepare the server for component replacement:
Step 1
a.
b.
If you cannot safely view and access the component, remove the server from the rack.
Caution
c.
d.
Remove all drives and any empty drive trays from the server.
Step 2
Disconnect all cables from the backplane.
Step 3
Tip
Disconnect all cables from the SAS expander card.
Step 4
Remove the two screws that secure the backplane assembly to the chassis floor (see
Step 5
Lift the backplane assembly, including steel tray and expander card straight up from the chassis.
Step 6
Remove the SAS expander card from the backplane assembly:
Step 7
a.
b.
Install the SAS expander card to the new backplane assembly:
Step 8
a.
b.
Align the new backplane assembly within the chassis walls, and then lower it evenly to the chassis floor
Step 9
until the screw-holes in the assembly align with the corresponding screw-holes in the chassis floor.
Install the two screws that secure the backplane assembly to the chassis floor.
Step 10
Reconnect all cables to the SAS expander.
Step 11
Reconnect all cables to the backplane.
Step 12
Cisco UCS C24 Server Installation and Service Guide
3-14
Power off the server as described in the
page 3-6.
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.
Remove the top cover as described in
page 3-7.
Remove the front chassis panel as described in
page 3-8.
Label the cables as you remove them to aid replacement.
Remove the three screws that secure the SAS expander to the backplane assembly steel tray (see
Figure 3-9).
Pull the SAS expander from the sockets on the drive backplane and then set the SAS expander aside
on an antistatic surface.
Push the two connectors on the SAS expander into the two sockets on the backplane assembly.
Install the three screws that secure the SAS expander to the backplane assembly steel tray (see
Figure 3-9).
"Shutting Down and Powering Off the Server" section on
"Removing and Replacing the Server Top Cover" section on
Removing and Replacing the Front Chassis Panel,
Chapter 3 Maintaining the Server
Figure 3-8).
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