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

You might remove the voltage regulator module (VRM) to perform maintenance on the SAN Volume Controller 2145-8F2 or SAN Volume Controller 2145-8F4.

Take precautions to avoid damage from static electricity. Wear an anti-static wrist strap and use a static-protected mat or surface. For more information, see Handling static-sensitive devices.

Figure 1 shows the microprocessors and 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. Remove the SAN Volume Controller 2145-8F4 cable retention bracket.
   
3. 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.
   
4. Remove the top cover. See Removing the top cover.
   
5. Press the latches on both sides of the VRM downward and outward.