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Powering on an expansion unit

You can power on an expansion unit that is either managed by a management console (such as the Hardware Management Console (HMC) or the IBM® Systems Director Management Console (SDMC)) or not managed by a management console.

Attention:
  • Before beginning, read this entire procedure. If there are procedural steps that cannot be performed at this time, the entire procedure must be delayed until a later time.
  • If the server is managed by a management console, the power off and power on functions must be performed by using the Power On/Off Unit utility on the management console.

To use the Power On/Off Unit utility from the HMC display, complete the following steps:

  1. Expand the Systems Management topic.
  2. Select Servers.
  3. From the Select column, select the server you are working on.
  4. In the Tasks area select the following options:
    1. Select Serviceability.
    2. Select Hardware.
    3. Select Power on/off I/O unit.
    4. Select Power on.
To use the Power On/Off Unit utility from the SDMC display, complete the following steps:
  1. On the Welcome page, under the Resources tab , select the server.
  2. Click Actions > Operations > Power On.
Attention:

If the server is not managed by a management console, the power off and power on functions must be performed by using the Packaging Hardware Resources utility from the IBM i service partition. To use the Packaging Hardware Resources, go to the system service tools or the dedicated service tools and do the following when instructed to in the procedure below:

  1. Select Start a service tool.
  2. Select Hardware service manager.
  3. Select Packaging hardware resources.
  4. Select Concurrent maintenance.

If the server is not managed by a management console and there is no IBM i service partition, the enclosure cannot be powered off and on with the server powered on.

Attention: Do not use this procedure in either of the following situations:
  • To replace disk units that are supported under device concurrent maintenance. Use the device concurrent maintenance procedure instead.
  • On the system unit or the system unit's integrated I/O enclosure. For system units and system units integrated I/O enclosures, see the "Powering on or off a system". This procedure is located in your host system's service information.
Notes:
  1. References to the console in this procedure refer to the console of the logical partition in which you are working.
  2. Throughout this procedure, the term HSL I/O bridge is interchangeable with RIO adapter.
  3. Messages that may be generated on the HMC during the procedure refer to specific partitions by their partition IDs. A partition ID is a numeric value that represents the order in which the partitions were created. The partitions listed in the Server Management content area are not necessarily listed in order of partition ID. A partition ID is listed under the General tab in the Partition Properties.

Perform the following with the assistance of the customer.

  1. If the ac power cords were disconnected when the enclosure was powered off and have not been reconnected, reconnect them now. If they are already connected, go to step 2.
    • The enclosure will automatically power on when the ac power cords are connected.
    • If this is a System i® server that is not managed by an HMC, go to step 2.
    • If this is a server managed by an HMC, power off the enclosure again. See Powering off an expansion unit. Then go to step 3.
  2. Were you instructed to perform a function 69 to power on the enclosure?
  3. Power on the enclosure using either the Power On/Off Unit utility from the HMC, or the Packaging Hardware Resources utility from the IBM i service partition, as described at the top of this page. Follow the instructions provided by the utility. Go to step 4.
    Note: If you are required to do this step by using the Packaging Hardware Resources utility from the IBM i service partition, but the Packaging Hardware Resources utility cannot be accessed, you might be able power on the enclosure by using the system control panel as follows:
    1. With the control panel set to manual mode, select function 07 and press Enter.
    2. Increment to A1 and press Enter. This will send out a Rack Power On command is issued on the SPCN, which will restore power any enclosure that is powered off.
    3. For further information about control panel functions and how to use them, see Control panel functions .
  4. Wait for I/O resources in the enclosure to be brought back online to a functional state, and then continue with the next step.

    It may take between five and ten minutes after the enclosure is powered on for IBM i resources in the enclosure to return to a operating state. Using the Packaging Hardware Resources and Logical Hardware Resources utilities in the hardware service manager, you can determine when resources in the enclosure return to a operating state by observing the transition of the resources from non-reporting (designated by a "?" next to the resources) to reporting (designated by the absence of a "?" next to the resources) or Unknown, Not Connected, Failed, or Disabled status to Operational status. If there is a disk unit attention SRC in the partition operator panel and the hardware service manager is not available, the transition to functional/operational has occurred when the disk unit attention SRC disappears and the partition resumes normal operation.

  5. Work with the customer to restart all I/O bus activity that was ended when the enclosure was powered off. Then go to the next step.
    • In AIX® partitions:
      • Work with the customer to configure all logical resources that were unconfigured when the enclosure was powered off. Use the cfgmgr command.
    • In IBM i partitions:
      • Work with the customer to vary on all configuration descriptions (ctl, device, line, network server, etc.) that were varied off when the enclosure was powered off. Use the vrycfg command.
      • Start all subsystems that were ended when the enclosure was powered off.
  6. If you moved the ac power cords of an enclosure from this enclosure to an alternate ac power source when this enclosure was powered off, move them back to this enclosure. To prevent the enclosure from losing ac power, move only one of the enclosure's ac power cords at a time. Then go to the next step.
  7. If the enclosure was configured as switchable when you powered off the enclosure, and you changed the mode to private, work with the customer to restore the mode of the enclosure to switchable using Switching the mode of a I/O enclosure's switchable resources . Then go to the next step.
  8. If you ended Cluster Resource Groups (CRGs) when you powered off the enclosure, work with the customer to start the CRGs. Then go to the next step.
  9. If ownership of the enclosure's HSL I/O bridge was changed when the enclosure was powered off, work with the customer to restore the desired ownership.
  10. Return to the procedure that sent you here.
Parent topic: Common service procedures

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Last updated: Fri, March 20, 2015