Prerequisites for troubleshooting

WARNING: To avoid potential issues, ALWAYS read the warnings and cautionary information in the product documentation before removing, replacing, reseating, or modifying system components.
IMPORTANT: This guide provides troubleshooting information using various software tools that support multiple Hewlett Packard Enterprise server products. In some sections of this document and in the software tools, server and enclosure are used as generic terms to support multiple products. For more information on HPE Synergy-specific terminology, see the HPE Synergy Glossary on the Hewlett Packard Enterprise Information Library (
  1. Review the important safety information.
  2. Before you change the compute module, gather and record symptom information. If the compute module powers on or if auxiliary power is available, download the Active Health System Log and obtain the OS logs.

    The OS logs are available only when the system has power.

    For more information about the Active Health System Log, see the HPE iLO user guide on the Hewlett Packard Enterprise website ( To obtain OS logs, see the OS documentation.

    If you choose to not download the Active Health System Log, you must gather all symptom information, including the following:
    • IML messages

    • POST error messages

    • OS logs

    • Physical symptoms (LED behavior, physical state, and so on)

    For more information about gathering symptom information, see Symptom information checklist.

  3. Gather all error information, such as the full POST error message displayed and the IML.
  4. If it is necessary to contact Hewlett Packard Enterprise, download the Active Health System log and submit a support case through Hewlett Packard Enterprise Support Center.
  5. Prepare the compute module for diagnosis.