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Cisco UCS C240 Server Installation and Service Guide
OL-25761-01
Chapter 3 Maintaining the Server
Installing or Replacing Server Components
Replacing a SAS Expander
The SAS expander is a card that plugs directly into the drive backplane. See
for more information about supported RAID controllers.
Note
The SAS expander is required for the SFF 24-drive option and the LFF 12-drive option.
The SFF 16-drive option does not use the SAS expander.
To install or replace a SAS expander, 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
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
Step 2
Remove the fan tray from the server (see
).
a.
Pinch the blue-plastic lever at each end of the fan tray to release the lever from the chassis.
b.
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.
c.
Lift the fan tray straight up and remove it from the chassis.
Step 3
Disconnect all cables from the SAS expander.
Step 4
Remove the SAS expander:
a.
Use a #2 Phillips-head screwdriver to remove the two screws that secure the SAS expander to the
backplane assembly steel tray (see
Caution
The motherboard heatsinks in front of the DIMM slots have sharp corners. When you pull the SAS
expander from the backplane, use caution to avoid injuring your fingers.
b.
Pull on both corners of the SAS expander to disengage it from the sockets on the drive backplane
and then set the SAS expander aside on an antistatic mat.
Step 5
Install the new SAS expander:
a.
Push the two board-edge connectors on the new SAS expander into the two sockets on the
backplane.
b.
Use a #2 Phillips-head screwdriver to install the two screws that secure the SAS expander to the
backplane assembly steel tray (see
Step 6
Reconnect SAS cables to the new SAS expander.
