Removing The San Volume Controller 2145-8F4 Or San Volume Controller 2145-8F2 Vrm; Replacing The San Volume Controller 2145-8F2 Or San Volume Controller 2145-8F4 Vrm; Location Of The Microprocessor And Vrm - IBM SAN Volume Controller 2145-CG8 Hardware Maintenance Manual

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" on page xx.
Figure 273 shows the microprocessors and VRMs.
Figure 273. Location of the microprocessor and VRM sockets
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VRM 1
2
Microprocessor 1
3
Microprocessor 2
4
VRM 2
Perform the following steps to remove the VRM:
1. Turn off the node while ensuring that its data is mirrored and synchronized. See MAP 5350 in the
IBM System Storage SAN Volume Controller Troubleshooting Guide 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" on page 77.
5. Press the latches on both sides of the VRM downward and outward.
The VRM is pulled out of the node and you can now replace the VRM.
Replacing the SAN Volume Controller 2145-8F2 or SAN Volume
Controller 2145-8F4 VRM
Before you replace the microprocessor, you must replace the voltage regulator module (VRM).
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2
3
4
Chapter 2. Removing and replacing parts
271