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a. Start the command-line interface (CLI). See "Accessing the SAN Volume Controller CLI" in the
IBM System Storage SAN Volume Controller 2145 Troubleshooting Guide.
b. Write down the 7-character serial number from the serial number label that is on the front of the
node. Ignore any hyphens (-) in the serial number.
c. On the front-panel display, press and release the down button until the Node panel is displayed.
Write down the node name that is shown on the bottom line.
d. Issue the following command, substituting the values for nodeserialnumber and nodename that you
wrote in the previous steps:
svctask writesernum -sernum nodeserialnumber nodename
where nodeserialnumber is the serial number on the front of the node and nodename is the name of
the node.
For example, to write the machine serial number to the system board when the serial number is
"13-FEDCB" and the node name is "ZYXW3," you would issue the following command:
svctask writesernum –sernum 13FEDCB ZYXW3
Note: The node will restart as soon as the serial number has been written to it.
Replacing the SAN Volume Controller 2145-8A4 system board
All the components that were removed when you removed the system board are reused during the
installation of the new system board.
Ensure that you have a monitor and USB keyboard available because they are required during this
procedure. You also need a power cable so that you can turn on the node while it is out of the rack.
Note: When you reassemble the components in the server, be sure to route all cables carefully so that
they are not exposed to excessive pressure.
Perform the following steps to install the system board:
1. Align the system board with the chassis, and replace the eight screws that you removed
2. Orient the microprocessor retention module as shown in Figure 282 on page 258.
Chapter 2. Removing and replacing parts
257
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