IBM SAN Volume Controller 2145-CG8, Hardware Maintenance Manual

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2. Remove the cable-retention bracket and disconnect the power cable from the node. See “Removing the
cable-retention bracket” on page 34.
3.
Locate the recessed service controller release button on the left side of the controller, which is marked
in blue, as shown in Figure 79.
4. Use a small screwdriver to gently press the release button and release the catch while pulling gently
forward on the service controller. The service controller will move slightly forward.
Note: If you meet any resistance, do not press harder, or you might damage the release mechanism.
5. You can stop pressing the release button and pull the service controller fully out of the frame
Note: When you replace a service controller, it is normal to change the worldwide node name
(WWNN) of the new service controller to match the one that is being replaced. In this case, you will
have two service controllers with the same WWNN. Clearly label the service controller that you are
removing and indicate that its WWNN is now a duplicate and that it must not be connected to a SAN
before its WWNN is reset.
Removing the SAN Volume Controller 2145-8G4 service controller
To remove the service controller, perform the following steps:
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 cable-retention bracket and disconnect the power cable from the node. See “Removing the
cable-retention bracket” on page 34.
3.
After ensuring that there is enough slack in the cables connected to the rear of the SAN Volume
Controller 2145-8G4 node, slide the node forward in the rack by approximately 10 cm (4 in).
4. Locate the recessed service controller release button on the left side of the controller, which is marked
in blue, as shown in Figure 80 on page 93.
svc00472
Figure 79. SAN Volume Controller 2145-8A4 service controller release button
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IBM SAN Volume Controller Hardware Maintenance Guide