Removing a PCIe storage enclosure with the system powered off

Learn about removing a PCIe storage enclosure from a system with the system powered off.

1. Record the feature code and serial number of the PCIe storage enclosure that you are removing. The feature code and serial number appear on the front panel of the PCIe storage enclosure.
2. Optional: You can use identify indicators to assist in locating the PCIe cables and connectors that are associated with the PCIe storage enclosure you are removing. To illuminate the identify indicators for the two connections to the PCIe storage enclosure that is being removed, complete the following steps.
   Important:

   • To complete this step, your system must be running firmware at the 01Ax760 level, or later.
   • The system must be powered on to do this step. After you complete this step for locating the PCIe connectors, the system is powered off.
   • If the PCIe storage enclosure is connected to two systems, complete this step for each system.
   Note: The identify indicators that are activated in this step provide support for steps 5 - 6.
   1. Choose one of the following options:
      • If your system is managed by a Hardware Management Console (HMC), complete the following steps:
        1. From the navigation bar, expand Systems Management.
        2. Click Servers.
        3. Select the server that you are working with.
        4. From the Tasks area, expand Hardware Information.
        5. Click PCIe Hardware Topology.
      • If your system is not managed by an HMC, complete the following steps:
        1. Access the ASMI by using an authority level of administrator or authorized service provider. For details about using the ASMI, see Managing the Advanced System Management Interface.
        2. In the ASMI navigation area, expand System Configuration.
        3. Click PCIe Hardware Topology.
   2. Review the PCIe Hardware Topology data to identify all PCIe links that are associated with the PCIe storage enclosure that you are removing. To make this identification, scan the I/O Enclosure Port column for values that contain the feature code and serial number that you recorded in step 1.
      Note: The I/O Enclosure Port column value looks similar to Uxxxx.001.yyyyyyy-P1-Cz-T3, where xxxx is the feature code of the PCIe storage enclosure that is connected by the PCIe link, yyyyyyy is the serial number of the PCIe storage enclosure that is connected by the PCIe link, and z is either 1 or 2. An example of an actual I/O Enclosure Port column value is UEDR1.001.6BAH004-P1-C1-T3.
   3. For each PCIe link that you identified in the previous step, complete the following steps:
      1. Select the link and click Identify Indicators.
      2. On the Identify Indicators display, select both locations and click Activate LED.
3. If the system is not already powered off, remove power from the system. For details, see Stopping a system or logical partition.
   Important: If the PCIe storage enclosure is connected to two systems, complete this step for each system.
4. If the system has a rear cover, remove or open it.
   Important: If the PCIe storage enclosure is connected to two systems, complete this step for each system.
5. Disconnect the PCIe cables from the PCIe storage enclosure.
   Note: If you chose to activate identify indicators in step 2, they can be used now to assist in locating the PCIe connectors from which to disconnect the cables.
6. Disconnect the PCIe cables from the PCIe connectors on the system.
   Note: If you chose to activate identify indicators in step 2, they can be used now to assist in locating the PCIe connectors from which to disconnect the cables.
   Important: If the PCIe storage enclosure is connected to two systems, complete this step for each system.
7. Remove power from the PCIe storage enclosure by disconnecting the power cables from the power supplies on the PCIe storage enclosure.
8. Remove the PCIe storage enclosure from the rack. For instructions, see Removing an enclosure from the rack.
9. If the system has a rear cover, close it.
   Important: If the PCIe storage enclosure is connected to two systems, complete this step for each system.
10. Record the current date and time for use when you check for serviceable events.
11. Power on the system. For details, see Starting the system or logical partition.
    Important: If the PCIe storage enclosure is connected to two systems, complete this step for each system.
12. Verify the PCIe hardware topology by completing the steps in the applicable procedure:
    • If you have a 5888 PCIe storage enclosure, see Verifying the PCIe hardware topology.
    • If you have an EDR1 PCIe storage enclosure, see Verifying the PCIe hardware topology.
    All PCIe hardware topology problems that are discovered in this step must be corrected before you continue with this procedure.

    Important: If the PCIe storage enclosure is connected to two systems, complete this step for each system.
13. Check for and handle new serviceable events that were generated during the procedure by completing the steps in Checking for new serviceable events. Use the date and time information that you recorded in step 10 as the start time for searching for new serviceable events.
    Important: If the PCIe storage enclosure is connected to two systems, complete this step for each system.