Removing the SAN Volume Controller 2145-8F4 or SAN Volume Controller 2145-8F2 microprocessor

The SAN Volume Controller 2145-8F4 or SAN Volume Controller 2145-8F2 must always be fitted with both microprocessors to function correctly.

Figure 1 shows the microprocessors and voltage regulator modules (VRMs).

Figure 1. Location of the microprocessor and VRM sockets

• VRM 1
• Microprocessor 1
• Microprocessor 2
• VRM 2

1. Turn off the node while ensuring that its data is mirrored and synchronized. See MAP 5350: Powering off a SAN Volume Controller node for more information.
   
2. To make sure that you can replace all cables in the same ports from which they were removed, record the position of all fibre-channel and Ethernet cables; then remove all cables from the back of the node.
   
3. Remove the node from the rack and place it on a flat, static-protective surface. See Removing the SAN Volume Controller from a rack.
   
4. Remove the top cover. See Removing the top cover.
   
5. Fully loosen one captive screw before loosening the other captive screw. This helps to break the bond between the heat sink and the microprocessor.
6. Remove the heat sink.
   Important: Be careful when handling the microprocessor and heat sink. If you wish to reuse the thermal grease between the heat sink and the microprocessor, do not contaminate it. If thermal grease is supplied with your replacement microprocessor, remove all traces of the used thermal grease before applying the new grease.
7. Rotate the microprocessor socket lever arm upward to its maximum vertical position.
8. Remove the microprocessor from the socket.