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Oracle® ZFS Storage Appliance Customer Service Manual

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Updated: November 2018
 
 

Replacing a ZS7-2 DIMM

Caution

Caution  -  This procedure requires that you handle components that are sensitive to static discharge, which can cause the component to fail. To avoid damage, wear an antistatic wrist strap and use an antistatic mat when handling components.

Removing a DIMM is a cold-service operation. You must power off the appliance before you remove the DIMM. There will be a loss of access to the storage unless the system is in a clustered configuration.

  1. Identify the faulted DIMM.

    Go to the Maintenance > Hardware section of the BUI, click the right-arrow icon for the controller, click DIMM, and note the ID of the faulted DIMM, which has an amber icon. To highlight the location of the memory module in the controller picture, click on the module ID. To view details about the faulted module, click its information icon and then click Active Problems.

  2. Shut down the controller using one of the power-off methods described in Powering Off the Controller.
  3. Disconnect the AC power cords from the rear panel of the controller.
    Caution

    Caution  -  Because 3.3 VDC standby power is always present in the system, you must unplug the power cords before accessing any cold-serviceable components.

  4. Extend the controller from the rack as described in Extending the Controller from the Rack.
  5. Remove the top cover as described in Removing the Controller Top Cover.
  6. Remove the air baffle by lifting the baffle up and out of the controller.
    image:Figure showing the air baffle being lifted from the controller.
  7. Set aside the air baffle.
  8. Locate the Fault Remind button.

    When the controller Fault Remind button [1] is pressed, an LED located next to the Fault Remind button lights green to indicate that there is sufficient voltage present in the fault remind circuit to light any fault LEDs that were lit due to a component failure. If this LED does not light when you press the Fault Remind button, it is likely that the capacitor powering the fault remind circuit has lost its charge. This can happen if the Fault Remind button is pressed for several minutes with fault LEDs lit or if power has been removed from the controller for more than 15 minutes.

    The following figure shows the location of the Fault Remind button.


    image:Figure showing the location of the Fault Remind button.
  9. Physically identify and note the location of the failed DIMM by pressing the Fault Remind button on the motherboard.

    Failed DIMMs are identified with a corresponding amber LED on the motherboard.

    • If the DIMM Fault LED is off, then the DIMM is operating properly.

    • If the DIMM Fault LED is on (amber), then the DIMM is failed and should be replaced [1].


    image:Figure showing a failed DIMM.
  10. Rotate both DIMM slot ejector levers outward as far as they will go.

    The action unlocks the DIMM and expels it from the socket.


    image:An illustration showing the rotation of the DIMM slot ejector levers.
  11. Carefully lift the DIMM straight up to remove it from the socket.
    image:Figure showing a memory DIMM being removed from the controller.
  12. Repeat the previous steps until all faulty DIMMs are removed.
  13. To install a replacement DIMM, ensure that the DIMM ejector levers at both ends of the DIMM slot are in their fully open position.
    image:An illustration showing the DIMM slot levers being opened
  14. Align the DIMM with the empty slot.

    Align the notch on the DIMM with the protrusion on the DIMM slot to ensure that the DIMM is installed correctly.

  15. Push the DIMM into the connector slot until the ejector tabs lock the DIMM in place.

    If the DIMM does not easily seat into the connector slot, verify that the notch in the DIMM is aligned with the connector key in the connector slot. If the notch is not aligned, damage to the DIMM might occur.


    image:Figure showing a memory DIMM being installed into the controller.
  16. Ensure that the levers have risen completely and have locked the DIMM in the slot.
    image:An illustration showing the DIMM locked into place in its slot.
  17. Repeat the previous steps until all replacement DIMMs are installed.
  18. Install the air baffle by placing it into the controller and lowering it to its inserted position.
    image:Figure showing the air baffle being lowered into its inserted position.
  19. Replace the top cover on the chassis.
  20. Return the controller to the normal rack position by pulling the green release tabs on the side of each rail while slowly pushing the controller into the rack.
  21. Reconnect all cables to their original ports, referring to the labels previously added as a guide. For cabling details, see the Oracle ZFS Storage Appliance Cabling Guide .
  22. Reconnect the power cords to the power supplies.
  23. Verify that standby power is on. Approximately two minutes after plugging in the power cords, the Power/OK status indicator on the front panel starts flashing.
  24. After the Power/OK status indicator is flashing, press and release the recessed Power button on the controller front panel.

    The Power/OK status indicator continues flashing during the startup sequence, which takes several minutes. When the system is operational, the indicator remains lit.

  25. After the Power/OK status indicator is lit steadily, log in and go to the Maintenance > Hardware screen of the BUI. Click the right-arrow icon for the controller, click DIMM, and verify that the status icon image:light on icon is green for the newly installed module. To view details about the new module, click its information icon.
  26. If a fault does not self-clear, see Repairing Active Problems.
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