Replacing Cpus And Heatsinks; Cpu Configuration Rules; Cpu Replacement Procedure - Cisco UCS C220 M4 Installation And Service Manual

Installing or Replacing Server Components

Replacing CPUs and Heatsinks

This section contains the following topics:
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CPU Configuration Rules

This server has two CPU sockets. Each CPU supports four DIMM channels (12 DIMM slots). See
Figure
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CPU Replacement Procedure

Caution CPUs and their motherboard sockets are fragile and must be handled with care to avoid damaging pins
during installation. The CPUs must be installed with heatsinks and their thermal pads to ensure proper
cooling. Failure to install a CPU correctly might result in damage to the server.
This server uses the new independent loading mechanism (ILM) CPU sockets, so no Pick-and-Place
Note
tools are required for CPU handling or installation. Always grasp the plastic frame on the CPU when
handling.
Power off the server as described in
Step 1
Slide the server out the front of the rack far enough so that you can remove the top cover. You might have
Step 2
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
Step 3 Remove the top cover as described in
Remove the plastic air baffle that sits over the CPUs.
Step 4
Remove the heatsink that you are replacing. Use a Number 2 Phillips-head screwdriver to loosen the four
Step 5
captive screws that secure the heatsink and then lift it off of the CPU.
Note
Cisco UCS C220 M4 Server Installation and Service Guide
3-22
CPU Configuration Rules, page 3-22
CPU Replacement Procedure, page 3-22
Additional CPU-Related Parts to Order with RMA Replacement Motherboards, page 3-25
3-12.
The server can operate with one CPU or two identical CPUs installed.
The minimum configuration is that the server must have at least CPU1 installed. Install CPU1 first,
and then CPU2.
The following restrictions apply when using a single-CPU configuration:
The maximum number of DIMMs is 12 (only CPU1 channels A, B, C, and D).
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PCIe riser 2/slot 2 is unavailable.
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Alternate loosening each screw evenly to avoid damaging the heatsink or CPU.
Shutting Down and Powering Off the Server, page
Removing and Replacing the Server Top Cover, page
Chapter 3 Maintaining the Server
3-7.
3-8.
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