Cisco UCS C240 M5 Service Manual

Memory mirroring reduces the amount of memory available by 50 percent because only one of the two
populated channels provides data. The second, duplicate channel provides redundancy.
Replacing DIMMs
Identifying a Faulty DIMM
Each DIMM socket has a corresponding DIMM fault LED, directly in front of the DIMM socket. See Internal
Diagnostic LEDs, on page 38 for the locations of these LEDs. When the server is in standby power mode,
these LEDs light amber to indicate a faulty DIMM.
Step 1
Remove an existing DIMM:
a) Shut down and remove power from the server as described in Shutting Down and Removing Power From the Server,
on page 39.
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.
If you cannot safely view and access the component, remove the server from the
rack.
Caution
c) Remove the top cover from the server as described in Removing the Server Top Cover, on page 41.
d) Remove the air baffle that covers the front ends of the DIMM slots to provide clearance.
e) Locate the DIMM that you are removing, and then open the ejector levers at each end of its DIMM slot.
Step 2
Install a new DIMM:
Before installing DIMMs, see the memory population rules for this server: DIMM Population Rules and Memory
Performance Guidelines , on page 70.
Note
a) Align the new DIMM with the empty slot on the motherboard. Use the alignment feature in the DIMM slot to correctly
orient the DIMM.
b) Push down evenly on the top corners of the DIMM until it is fully seated and the ejector levers on both ends lock
into place.
c) Replace the top cover to the server.
d) Replace the server in the rack, replace cables, and then fully power on the server by pressing the Power button.
Replacing CPUs and Heatsinks
This section contains the following topics:
•
CPU Configuration Rules, on page 73
•
Tools Required For CPU Replacement, on page 73
•
Replacing a CPU and Heatsink, on page 73
•
Additional CPU-Related Parts to Order with RMA Replacement Motherboards, on page 80
Cisco UCS C240 M5 Server Installation and Service Guide
72
Maintaining the Server
Replacing CPUs and Heatsinks

Cisco UCS C240 M5 Specifications

General

Brand	Cisco
Model	UCS C240 M5
Category	Server
Language	English