Remove a NEM

You can remove a NEM from a powered-on chassis using a hot-plug operation, or from a powered-off chassis. The server modules must be informed if you are replacing a non-redundant NEM.

This procedure is for removing a NEM if you do not plan to replace it. If you plan to replace a NEM, see Replace a NEM.

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Caution - If the chassis is powered on and you are not replacing the NEM within 60 seconds, install a NEM filler panel to ensure proper system operation.

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1. If you are removing a NEM from a powered-on chassis, read the hot-plug guidelines in Performing Hot-plug Insertion and Removal and follow the instructions in Prepare the PCIe Interface for Hot-plug Removal and Prepare SAS Interfaces for Hot-plug Removal.
2. In the rear of the chassis, locate the NEM that you want to remove.
3. Do one of the following:
   • If you are removing a NEM from a powered-off chassis, go to Step 7.
   • If you are removing a NEM from a powered-on chassis, continue with Step 4.
4. Push the ATTN button once.

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   Note - Pushing the ATTN button twice within five seconds will cause the Power/OK LED to return to solid green. This action will cancel the request for a NEM removal.

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5. View the behavior of the Power/OK LED and Ready-to-Remove LED or the ILOM interface to determine if the Ready-to-Remove action is successful.

   If the action is successful:

   • The NEM green Power/OK begins to slowly blink.

   • The OK- to-Remove blue LED illuminates and the Power LED turns off.

   • In the ILOM System Information —> Components screen: The Return-to-Service option is available in the Actions drop-down list for the NEM and the Ready-to-Remove status column for the NEM is Ready.

   • In the ILOM CLI show /CH/NEMx command output, the following status is listed in the Properties section: prepare_to_remove_status = Ready

   • /CH/NEMx/OK reads Off in either the ILOM web interface or CLI.

   If the action is unsuccessful:

   • The NEM green Power/OK LED begins to slowly blink, then returns to solid green, and the Ready-to-Remove LED does not go on.

   • In the ILOM System Information —> Components screen, the Return to Service option does not become available in the Actions drop-down list and the Ready-to-Remove status column for the NEM still reads Not Ready.

   • In the ILOM CLI show /CH/NEMx command output, the following status is listed in the Properties section: prepare_to_remove_status = NotReady

   • /CH/NEMx/OK reads On in either the ILOM web interface or CLI.

6. Do one of the following:
   • If the Ready-to-Remove action is successful, proceed with Step 7.
   • If the Ready-to-Remove action is not successful, do not remove the NEM. Follow the instructions in Forcing NEM Graceful Removal to remove the NEM.
7. Label the cables so that you can install them in the same location, then remove all cables from the NEM.

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   Note - Wait five minutes after CMM boot up or NEM insertion before removing the NEM.

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8. Press together and hold the buttons on both the right and left ejector levers.
9. To unlatch the NEM from the chassis, open the ejector levers by extending them outward.
10. Holding the open ejector levers, pull the NEM toward you until you can pull the rest of the module out by hand.

    Support the weight of the NEM, with one hand at the bottom of the NEM.

    
    

Related Information

• Replace a NEM

• Installing and Removing SFP+ Optical Transceiver Modules

• SFP+ Connector Cabling Options

• Understanding the NEM

• Performing Hot-plug Insertion and Removal