Replacing the SAN Volume Controller 2145-8G4 system board

All the components that were removed when you removed the system board are reused during the installation of the new system board.

There are two versions of the SAN Volume Controller 2145-8G4. The original version (Rev 1) has two microprocessors and eight 1 GB memory modules. The second version (Rev 2) has one microprocessor and four 2 GB memory modules.

Perform the following steps to install the system board:

  1. Lower the right side into place with the system board positioned slightly towards the front of the box. Lower the left edge of the system board into place and then push the system board towards the back of the box until it engages in place and the screw holes line up. Take care to ensure that the Ethernet ports on the rear of the system board engage in the frame cutouts.
    Figure 1. SAN Volume Controller 2145-8G4 system board
    This figure shows the system board partially installed in the SAN Volume Controller 2145-8G4 node
  2. Replace the six screws on the system board, as shown in Figure 2, to secure the system board to the chassis.
    Figure 2. The placement of the screws that secure the SAN Volume Controller 2145-8G4 system board
    This figure shows the location of the screws that secure the SAN Volume Controller 2145-8G4 system board
  3. Replace the four stand-off screws from beside the I/O ports at the rear of the server. Figure 3 shows the location of the stand-off screws.
    Figure 3. Serial and video ports on the SAN Volume Controller 2145-8G4
    This figure shows the location of the stand-off screws that are next to the serial and video ports
  4. Replace the power backplane by pushing it right to connect it to the system board and pushing the power supply back in to connect to it. See Replacing the power backplane.
  5. Install one of the microprocessors while carefully checking the orientation and remembering to close the release lever, which is shown in Figure 4.
    Figure 4. Installing the microprocessorThis figure shows how to install the SAN Volume Controller 2145-8G4 microprocessor
    • reference key one Microprocessor orientation indicator
    • reference key two Microprocessor
    • reference key three Microprocessor orientation indicator
    • reference key four Microprocessor connector
    • reference key five Microprocessor release lever
  6. Install a heat sink. If this is an original version of the SAN Volume Controller 2145-8G4 node, you will install the other heat sink in step 7.
    1. Apply thermal grease to the top of the microprocessor. Apply nine dots of thermal grease in three rows of three dots each with the outer rows approximately 5 mm from the edge of the microprocessor. The diameter of the cap from the thermal grease syringe is 5 mm, so you can use it to judge the required position of the dots of thermal grease, as shown in Figure 5.
      Figure 5. Estimating the position of the thermal grease dots
      This figure shows how to estimate the position of the thermal grease dots
    2. For each dot of thermal grease, use two divisions on the syringe scale, which is 0.02 ml of grease. You will use about half the syringe contents for the nine dots. Figure 6 shows how the microprocessor appears with the nine dots of grease.
      Figure 6. Complete set of nine thermal grease dots on the microprocessor
      This figure shows a complete set of the nine thermal grease dots on the microprocessor
    3. Install the heat sink by gently squeezing it down onto the thermal grease and then tightening the four retaining screws alternately and evenly.
  7. If this is a Rev 1 node, repeat steps 5 and 6 for the second microprocessor and heat sink. If this is a Rev 2 node, continue with the next step.
  8. Replace either eight memory modules for the Rev 1 node or four memory modules for the Rev 2 node. See Replacing the memory modules (DIMM).
  9. Replace the right air baffle, which is shown in Figure 7.
    1. Locate the pin on the bottom of the air baffle in the locating hole on the system board.
    2. Push the baffle backwards to locate it in place.
    3. Pull the baffle slightly to the right to locate the two clips in the support rail.
    Figure 7. Right air baffle on the SAN Volume Controller 2145-8G4 system board
    This figure shows the right air baffle on the SAN Volume Controller 2145-8G4 system board
  10. Reconnect the light path ribbon cable connector and the CD-RW ribbon cable connector, as shown in Figure 8.
    1. Replace the video cable connector and the USB cable connector.
    2. Replace the cable connectors for fans 6, 5, 4 and 3.
    Figure 8. Connectors on the right front side of the SAN Volume Controller 2145-8G4 system board
    This figure shows how to remove connectors from the SAN Volume Controller 2145-8G4 system board on the left front side
    • reference key one CD-RW connector
    • reference key two Light path cable connector
    • reference key three Video cable connector
    • reference key four USB cable connector
    • reference key five Fan 3 connector
    • reference key six Fan 4 connector
    • reference key seven Fan 5 connector
    • reference key eight Fan 6 connector
  11. Replace the left air baffle, which is shown in Figure 9. You must position the CD-RW cable within the baffle.
    Figure 9. Left air baffle on the SAN Volume Controller 2145-8G4
    This figure shows the left air baffle on the SAN Volume Controller 2145-8G4 system board
  12. Replace fan 2.
  13. Replace the cable connectors for fans 2 and 1, as shown in Figure 10.
    Figure 10. Connectors on the SAN Volume Controller 2145-8G4 system board
    This figure shows where to remove connectors from the SAN Volume Controller 2145-8G4 system board on the left front side
    • reference key one Right disk signal cable connector
    • reference key two Left disk signal cable connector
    • reference key three Fan 1 connector
    • reference key four Fan 2 connector
  14. Replace the left disk drive cable in the front socket and the right disk drive cable in the rear socket.

  15. Replace the riser card that you removed from adapter slot 2. Push it into its connector.
  16. Replace the fibre-channel adapter and riser card. See Replacing the fibre-channel adapter assembly.
  17. Replace the top cover. See Replacing the top cover.
  18. Place the node in the rack. See Replacing the SAN Volume Controller in a 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.
    • 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 cluster using the SAN Volume Controller Console 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. See Adding a node to a cluster for more information.
    • If any other message is shown on the front panel, use MAP 5000: Start to resolve the problem.
    Note: It is essential that you perform 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). See Accessing the SAN Volume Controller 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:

      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.
Parent topic: Replacing the SAN Volume Controller system board
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