Resetting the managed system to a nonpartitioned configuration

You can use the Hardware Management Console (HMC) and the Advanced System Management Interface (ASMI) to erase all of your logical partitions and reset the managed system to a nonpartitioned configuration. When you reset the managed system, all the physical hardware resources are assigned to a single logical partition. This action allows you to use the managed system as if it were a single, nonpartitioned server.

Before you begin

Attention: By resetting a partitioned managed system to a nonpartitioned configuration, you lose all of your logical partition configuration data. However, resetting the managed system does not erase the operating systems and data from disk units on that managed system.

Before you reset the managed system, ensure that the hardware placement in the managed system supports a nonpartitioned configuration. If the hardware placement in the managed system does not support a nonpartitioned configuration, you must move the hardware so that the hardware placement supports a nonpartitioned configuration. For more information about how to place the hardware in your managed system to support a nonpartitioned configuration, contact your marketing representative or business partner.

If you plan to use an operating system that is already installed on one of the logical partitions on the managed system (instead of reinstalling the operating system after you reset the managed system), consider how the console that is used by that operating system will change when you reset the managed system. If the operating system that you want to use is AIX®, log in to AIX and enable the login prompt for the virtual serial port vty0 by using either the System Management Interface Tool (SMIT) or the chdev command. You can then reset the managed system, use a physical serial console to log in to AIX, and use SMIT or the chcons command to change the console device to the console device you want to use.

You must have an ASMI login profile with an administrator authority level.

Parts of this procedure must be performed at your HMC (not connected remotely). Ensure that you have physical access to the HMC before you begin.

About this task

To reset a managed system with logical partitions to a nonpartitioned configuration by using the HMC, follow these steps:

Procedure

  1. Shut down all logical partitions on your managed system by using the operating system procedures.
    For more information about shutting down logical partitions by using operating system procedures, see the following information:
  2. If the managed system powered off automatically when you shut down the last logical partition, power on the managed system to the Standby state. To power on the managed system to the Standby state, complete the following steps:
    HMC Version Procedures
    If you are using the HMC Version 10.1.1020, or earlier
    1. In the navigation pane of your HMC, open Systems Management and click Servers.
    2. In the work pane, select the managed system, click the Tasks button, and click Operations > Power On.
    3. Set the power-on mode as Partition Standby and click OK.
    4. Wait until the work pane displays a Standby state for the managed system.
    If you are using HMC Version 10.2.1030, or later
    1. In the navigation pane of your HMC, open Systems Resources.
    2. In the work pane, select the managed system, click Connections and operations > Power On.
    3. Set the power-on mode as Partition Standby and click OK.
    4. Wait until the work pane displays a Standby state for the managed system.
    If you are using HMC Version 10.3.1060.0, or later
    1. In the navigation pane of your HMC, open Systems Resources.
    2. In the work pane, select the managed system, click Connections and operations > Power on system.
    3. Select Normal power on, System profile, or Hardware Discovery as your preferred mode.
    4. Click Power on.
    5. Wait until the work pane displays a Standby state for the managed system.
  3. Initialize the profile data on the HMC. Complete the following steps:
    HMC Version Procedures
    If you are using the HMC Version 10.1.1020, or earlier
    1. In the work pane, select the managed system, click Configuration > Manage Partition Data > Initialize.
    2. Click Yes to confirm.
    If you are using HMC Version 10.2.1030, or later
    1. In the work pane, select the managed system, click Config backup > Intialize profile.
    2. Click Yes to confirm.
  4. Clear the logical partition configuration data on the managed system. Complete the following at your HMC (not connected remotely):
    1. In the navigation pane, click HMC Management.
    2. In the work pane, click Open Restricted Shell Terminal.
    3. Type the command: lpcfgop -m managed_system_name -o clear, where managed_system_name is the name of the managed system as it is displayed in the work pane.
    4. Enter 1 to confirm.
      This step takes several seconds to complete.
  5. Optional: If you no longer intend to manage the system by using the HMC, remove the connection between the HMC and the managed system. To remove the connection between the HMC and the managed system, complete the following steps:
    HMC Version Procedure
    If you are using HMC Version 10.1.1020, or earlier
    1. In the work pane, select the managed system, click the Tasks button, and click Connections > Reset or Remove Connection.
    2. Select Remove connection and click OK.
    If you are using HMC Version 10.2.1030, or later
    1. In the work pane, select the managed system, click Connections and operations > Reset or Remove connection.
    2. Select Remove connection and click OK.
    If you are using HMC Version 10.3.1060.0, or later
    1. In the work pane, select the managed system, click Connections and operations > Remove connection.
    2. Select the managed system that you want to remove and click Remove.
      Note: If you want to reset the connection, click Connections and operations > Reset connection. Select the managed system that you want to reset and click Reset.
  6. Access the Advanced System Management Interface (ASMI) by using a web browser on a PC. If you do not already have a PC that is set up to access the ASMI on the managed system, you need to set up the PC now.
    For instructions, see Accessing the ASMI using a web browser.
  7. On the ASMI Welcome window, specify your user ID and password, and click Log In.
  8. In the navigation pane, expand Power/Restart Control and click Power On/Off System.
  9. Set Boot to server firmware to Running.
  10. Click Save settings and power off.
  11. Click Power On/Off System periodically to refresh the window. Repeat this step until Current system power state: Off is displayed in the navigation pane.
  12. Click Save settings and power on.
  13. Wait for the managed system to restart.
    It can take several minutes for the managed system and operating system to restart completely.