Replacing A Drive Backplane; Step - Cisco UCS C240 Installation And Service Manual

Chapter 3 Maintaining the Server

Replacing a Drive Backplane

The Small Form-Factor (24-drive or 16-drive) and Large Form-Factor (12-drive) backplanes and their
Note
corresponding chassis drive bays 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:
The 16-drive backplane option does not use a SAS expander. You are instructed to skip steps that involve
Note
the SAS expander in the following procedure, if your server has the 16-drive backplane.
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.
Remove all drives and any empty drive trays from the server.
Step 2
Tip
Remove the fan tray from the server (see
Step 3
a.
b.
c.
Disconnect all cables from the backplane.
Step 4
If your server has a SAS expander, disconnect cables from this expander. (The SFF 16-drive backplane
Step 5
option does not use an expander.)
Disconnect the first backplane power harness cable from the motherboard to provide clearance. This is
Step 6
motherboard connector BACKPLANE POWER1, between fan connectors 5 and 6 (see
Loosen the two captive thumbscrews that secure the backplane to the chassis (see
Step 7
Lift the backplane assembly, including steel tray and any expander card straight up from the chassis and
Step 8
set it on an antistatic mat.
If your SFF server has the 16-drive backplane, it does not use a SAS expander. Skip to
Note
OL-25761-01z
Power off the server as described in the
page 3-7.
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 3-8.
Label the drive trays as you remove them to aid replacement.
Pinch the blue-plastic lever at each end of the fan tray to release the lever from the chassis.
Simultaneously rotate both levers up 90-degrees. The cam action of the levers lifts the fan tray up
and disengages the six fan modules from their connectors on the motherboard.
Lift the fan tray straight up and remove it from the chassis.
Installing or Replacing Server Components
"Shutting Down and Powering Off the Server" section on
"Removing and Replacing the Server Top Cover" section on
Figure 3-9).
Cisco UCS C240 Server Installation and Service Guide
Figure 3-9).
Figure 3-9).
Step 11.
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