b) Remove the top cover from the server as described in
Removing the Server Top Cover, on page 28
.
c) Grasp the fan module at its front and rear finger-grips. Lift straight up to disengage its connector from the motherboard.
Step 2
Install a new fan module:
a) Set the new fan module in place. The arrow printed on the top of the fan module should point toward the rear of the
server.
b) Press down gently on the fan module to fully engage it with the connector on the motherboard.
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 CPU configuration rules and the procedure for replacing CPUs and heatsinks:
CPU Configuration Rules
This server has two CPU sockets on the motherboard. Each CPU supports six DIM channels (12 DIMM slots).
See
DIMM Population Rules and Memory Performance Guidelines, on page 51
.
• The server operates with two identical CPUs installed.
• The maximum combined memory allowed in the 12 DIMM slots controlled by any one CPU is 768 GB.
To populate the 12 DIMM slots with more than 768 GB of combined memory, you must use a
high-memory CPU that has a PID that ends with an "M", for example, UCS-CPU-6134M.
Tools Required For CPU Replacement
You need the following tools and equipment for this procedure:
• T-30 Torx driver—Supplied with replacement CPU.
• #1 flat-head screwdriver—Supplied with replacement CPU.
• CPU assembly tool—Supplied with replacement CPU. Orderable separately as Cisco PID UCS-CPUAT=.
• Heatsink cleaning kit—Supplied with replacement CPU. Orderable separately as Cisco PID
UCSX-HSCK=.
One cleaning kit can clean up to four CPUs.
• Thermal interface material (TIM)—Syringe supplied with replacement CPU. Use only if you are reusing
your existing heatsink (new heatsinks have a pre-applied pad of TIM). Orderable separately as Cisco
PID UCS-CPU-TIM=.
One TIM kit covers one CPU.
Cisco Application Services Engine Hardware Installation Guide
39
Maintaining the Server
Replacing CPUs and Heatsinks
