Non-EEH Adapters Will Not Configure on p5 and i5 Systems


The POWER Hypervisor will not configure non-EEH adapters on p5 and i5 systems.


POWER5-based systems are currently only orderable with adapters that support EEH. Support of a non-EEH adapter (OEM adapter) is only possible when the system has not been configured for partitioning. This is the case when a new system is received, for example, and it is in full system partition and is planned to be used without an HMC. EEH will be disabled for that adapter upon system initialization.

When the platform is prepared for partitioning or is partitioned, the POWER Hypervisor prevents disabling EEH upon system initialization. Firmware in the partition will detect any non-EEH device drivers that are installed and will not configure them. Therefore, all PCI adapters in p5 and i5 systems must be EEH capable in order to be used by a partition. This applies to I/O installed in I/O drawers attached to a p5 and i5 system and I/O installed in planar adapter slots found in p5 and i5 system units.

A customer does not need to create more than a single partition to put the platform in a state where the hypervisor considers it to be partitioned. The platform becomes partitioned (in general, but also in specific reference to EEH enabled by default) as soon as the customer attaches an HMC and performs any function that relates to partitioning. Simple hardware service operations do not partition the platform, so it is not simply connecting an HMC that has this affect. However, modifying any platform attributes related to partitioning (such as booting under HMC control to only PHYP standby, and suppressing autoboot to the pre installed OS partition) results in a partitioned platform, even if the customer does not actually create additional partitions.

All platform IO slots (Sacs and drawers) are managed the same with respect to EEH.

In order to return a system to a non-partitioned state, you must perform a reset.

Restoring your server to factory settings

You can reset your server to the factory default settings. We recommend that you perform this task only when directed by your service provider.

Attention: Before performing this procedure, make sure you manually record all settings that need to be preserved. This operation can be performed only if the identical level of firmware exists on both the permanent firmware boot side, also known as the P side, and the temporary firmware boot side, also known as the T side.
Performing this procedure will result in the loss of all system settings (such as the HMC access and ASMI passwords, time of day, network configuration, and hardware deconfiguration policies) that you may have set through user interfaces. Also, you will lose the system error logs and partition-related information.

To perform this operation, your authority level must be one of the following:

Authorized service provider

To restore server settings to factory settings:

  1. On the ASMI Welcome pane, specify your user ID and password.
  2. Click Log In.
  3. In the navigation area, expand System Service Aids.
  4. Select Factory Configuration.
  5. Select the options you want to restore to factory settings.
  6. Click Continue.
    The service processor reboots.

Special Notices

This material has not been submitted to any formal IBM test and is published AS IS. It has not been the subject of rigorous review. IBM assumes no responsibility for its accuracy or completeness. The use of this information or the implementation of any of these techniques is a client responsibility and depends upon the client's ability to evaluate and integrate them into the client's operational environment.


Publish Date
01 February 2005

Last Update
12 April 2005

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