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## Increase System Memory With Additional DIMMs

Note - This is a cold service procedure that can be performed by customers. See Cold Service, Replaceable by Customer for more information about cold service procedures.

You should be familiar with the memory configuration guidelines described in Memory Configuration Guidelines before adding new DIMMs to increase a server's memory capacity.

| Caution - You must disconnect the power cables from the system before performing this procedure.

1. Perform the preliminary steps required for cold service procedures.

   See Cold Service, Replaceable by Customer for instructions.

2. Unpack the new DIMMs and place them on an antistatic mat.
3. Swing the air duct up and forward to the fully open position.
4. At a DIMM slot that is to be upgraded, open the ejector tabs and remove the filler panel.

   Do not dispose of the filler panel. You may want to reuse it if any DIMMs are removed at another time.

5. Align the notch on the bottom edge of the DIMM with the key in the connector.

   This alignment ensures that the DIMM is oriented correctly.

6. Press the DIMM into the connector until the ejector tabs lock the DIMM in place.

   Figure 50 Installing DIMMs

   Note - If the DIMM does not easily seat into the connector, do not try to force it into position. Instead, check its orientation. If the orientation is not correct, forcing the DIMM into the connector is likely to damage the DIMM, or the connector, or both.

7. Repeat Step 4 through Step 6 until all DIMMs are installed.
8. Return the air duct to the closed position.
9. Install the top cover.

   See Install the Top Cover.

10. Slide the server into the rack.

    See Reinstall the Server in the Rack.

11. Connect the power supplies.

    See Reconnect the Power Cords.

    Note - As soon as the power cords are connected, standby power is applied. Depending on how the firmware is configured, the system might boot at this time.

12. Power on the server.

    See Power On the Server (`start /SYS` Command) or Power On the Server (Power Button).

13. Perform the following steps to verify that there are no faults:
    1. Set the virtual keyswitch to `diag` so that POST will run in Service mode.

           -> set /SYS keyswitch_state=Diag
           Set ‘keyswitch_state' to ‘Diag'

    2. Power cycle the system.

           -> stop /SYS
           Are you sure you want to stop /SYS (y/n)? y
           Stopping /SYS
           -> start /SYS
           Are you sure you want to start /SYS (y/n)? y
           Starting /SYS

       Note - The server takes about one minute to power off. The Oracle ILOM console does not indicate when the system is actually powered off.

    3. Switch to the system console to view POST output.

           -> start /HOST/console

       Watch the POST output for possible fault messages. The following output is a sign that POST did not detect any faults:

           .
           .
           .
           0:7:2>INFO:
           0:7:2>    POST Passed all devices.
           0:7:2>POST:    Return to VBSC.
           0:7:2>Master set ACK for vbsc runpost command and spin...

       Note - The system might boot automatically at this point. If so, go directly to Step e. If it remains at the `ok` prompt go to Step d.

    4. If the system remains at the ok prompt, type `boot`.
    5. Return the virtual keyswitch to Normal mode.

           -> set /SYS keyswitch_state=Normal
           Set ‘ketswitch_state' to ‘Normal'

##### Related Information

- Remove a DIMM

- Install a DIMM

- Verify DIMM Functionality

- Memory Configuration Guidelines

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