Replacing an HBA Host Port

You must take the offline to replace a . Depending on how the host is taken offline, reservation and logical drive registration data for the that are no longer part of the configuration might be retained along with current registration and reservation data.

Accumulation of old, data eventually might cause the to reach the upper boundary of allowed and to issue an Insufficient Registration Resources error if another HBA host port attempts to register. The maximum number of persistent reservations per logical drive depends on your system configuration.

To prevent an Insufficient Registration Resources error, you must clear the and of HBA host ports no longer included in the configuration. It is recommended that you clear logical drive reservations only during scheduled maintenance downtimes to prevent interference with cluster server operations.

  1. Does your Default Group have default mappings?
  2. Physically replace the failed host bus adapter with the new host bus adapter, and reboot the host.
  3. Use the host bus adapter's boot utility to obtain the HBA host port of the new host bus adapter.
  4. Select the failed HBA host port from the Mappings tab, and select Mappings >> Replace Host Port .
  5. Select a replacement HBA host port from the New identifier list.
    The list shows all of the undefined HBA host ports in ascending identifier order. An undefined HBA host port has not been associated with a host. The first undefined HBA host port appears by default. Also, you can type an identifier manually.


    Note:

    The maximum length of the HBA host port name cannot exceed 16 hexadecimal characters.

  6. Type an HBA host port name in the Host Port name text box.
    By default, the text box shows the HBA host port name that is associated with the current identifier. Keep the same name, or use a similar name.


    Important:

    An HBA host port name is required and must be unique. If the HBA host port name duplicates that of another HBA host port in the , you receive an error message. You are prompted to type a new HBA host port name.

  7. Click OK.
    The changed HBA host port definition is saved, and the dialog closes. You have finished this procedure.
  8. Select the failed HBA host port from the Mappings tab, and select Mappings >> Replace Host Port .
  9. Select a replacement HBA host port from the New identifier list.
    The list shows all of the undefined HBA host ports in ascending identifier order. An undefined HBA host port has not been associated with a host. The first undefined HBA host port appears by default. Also, you can type an identifier manually.


    Note:

    The maximum length of the HBA host port name cannot exceed 16 hexadecimal characters.

  10. Type an HBA host port name in the Host Port name text box.
    By default, the text box shows the HBA host port name that is associated with the current identifier. Keep the same name, or use a similar name.


    Important:

    An HBA host port name is required and must be unique. If the HBA host port name duplicates that of another HBA host port in the storage subsystem, you receive an error message. You are prompted to type a new HBA host port name.

  11. Click OK.
    The changed HBA host port definition is saved, and the dialog closes.
  12. Physically replace the failed host bus adapter with the new host bus adapter.
  13. Use the host bus adapter's boot utility to obtain the HBA host port WWID of the new host bus adapter.
  14. Reboot the host so that the new host bus adapter is identified by the .

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