Replacing the system board: 2145-CG8 or 2145-CF8

You can replace the system board on SAN Volume Controller 2145-CG8 or 2145-CF8 nodes All the components that were removed when you removed the system board are reused during the installation of the new system board.

Before you begin

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, if necessary.

You must remove and replace the microprocessor when you replace the system board. Ensure that you have alcohol wipes and thermal grease available to correctly perform this task.

Note: When you reassemble the components in the node, be sure to route all cables carefully so that they are not exposed to excessive pressure.

DANGER

Multiple power cords. The product might be equipped with multiple power cords. To remove all hazardous voltages, disconnect all power cords. (L003)

or

or

1. Unpackage the new system board and set its jumpers appropriately, as shown in Figure 1.
   Figure 1. Setting jumpers on the system board

   

   •  1  Jumper J29
   •  2  Jumper J147
   •  3  SW3 switch block
   •  4  SW4 switch block

   Set all switches in switch blocks SW3 and SW4 to OFF.

   If equipped with a jumper, jump J29 pins 1 and 2. Otherwise, no jumper is required.

   If equipped with a jumper, jump J147 pins 1 and 2. Otherwise, no jumper is required.

   Tip: Jumpers J29 and J147 number pins from different starting positions.
2. Place the side of the system board assembly that is farther from the power supply units beneath the catches. Lower the opposite side of the system board until it is flat in the chassis. Align the rear connectors with the holes in the rear of the server and slide the system board towards the rear of the node, as shown in Figure 2.
   Figure 2. Removing and replacing the SAN Volume Controller 2145-CG8 or 2145-CF8 system board

   
   •  1  System-board handle
   •  2  Fan-assembly bracket
3. Grasp the fan assembly brackets and rotate them down toward the chassis.
4. Replace all of the cables that were removed previously.
5. Reinstall the hot-swap fans, as described in Replacing the fans: 2145-CG8 or 2145-CF8.
6. Reinstall the microprocessor and heat sink, as described in Replacing the microprocessor: 2145-CG8 or 2145-CF8.
7. Reinstall the DIMMs, as described in Replacing the memory modules (DIMM).
8. Reinstall the white plastic air baffles.
9. Reinstall the power supply units, as described in Replacing a power supply: 2145-CG8 or 2145-CF8.
10. Replace the disk-controller and USB riser-card assembly, as described in Replacing the disk-controller and USB riser-card assembly: 2145-CG8 or 2145-CF8.
11. Replace the optional high-speed SAS-adapter and riser-card assembly, as described in Replacing the high-speed SAS adapter assembly: 2145-CG8 or 2145-CF8.
12. Replace the Fibre Channel adapter and riser card. See Replacing the Fibre Channel adapter assembly: 2145-CG8 or 2145-CF8.
13. Make sure that all cables, adapters, and other components are installed and seated correctly and that you have not left loose tools or parts inside the node. Make sure that all internal cables are correctly routed. If you disconnected the Fibre Channel and Ethernet cables, make sure that each cable is reconnected to the same port from which it was removed.
14. Replacing the top cover: 2145-CG8 or 2145-CF8
15. If you removed the node from the rack, replace the node in the rack, as described in Replacing a node in a rack.
16. If you removed any Fibre Channel or Ethernet cables, use the labels you that placed on each cable to identify the ports from which they were removed.
17. If you removed the power cords, replace the power cords and the cable-retention brackets, as described in Replacing the cable-retention brackets: 2145-CG8 or 2145-CF8.
18. Lift the locking levers ( 1  in Figure 3) on the slide rails and push the server  2  all the way into the rack until it clicks into place.
    Figure 3. Raising the locking levers of the slide rails of the rack

    
19. Turn on the node. Wait for the front panel display to remain stable for at least five minutes before taking any further action.
    Note: If you are a service representative completing this procedure, this might take up to two hours to complete.
    • If the repair has been successful and if the node was able to save its state data before shutting down, the node starts and rejoins the cluster. The front panel displays Cluster: and a cluster name if the node has rejoined a cluster.
    • If the repair has been successful but the node was not able to save its state data before shutting down, the node displays node error 578. Follow the procedures in Deleting a node from a clustered system by using the management GUI to delete the node from the cluster and then add it back into the cluster. If more than one node has failed, ensure that the node is added back into its original I/O group.
    • If any other message is shown on the front panel, use MAP 5000: Start to resolve the problem.
    Note: It is essential that you accomplish all the stages of the next step to ensure that the replacement system is set to the serial number of the original machine. Failure to do this might invalidate the customer's warranty or service agreement.
20. After you make sure that the node is operating as part of the cluster, perform the following steps to restore the original machine serial number to the new system board:
    1. Start the command-line interface (CLI).
    2. 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.
    3. 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.
    4. Issue the following command, substituting the values for nodeserialnumber and nodename that you wrote in the previous steps:

       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:

       writesernum -sernum 13FEDCB ZYXW3

       Note: The node will restart as soon as the serial number has been written to it.