Nx boot failure

Configuration changes, such as added devices or adapter firmware updates, and firmware or application code problems can cause a compute node to fail the power-on self-test (POST).

If a compute node fails POST, it responds in either of the following ways:
  • The compute node restarts automatically and attempts POST again.
  • The compute node hangs and you must manually restart the compute node for the compute node to attempt POST again.
After a specified number of consecutive attempts (automatic or manual), the Nx boot failure feature causes the compute node to revert to the default UEFI configuration and start the Setup utility, so that you can make the necessary corrections to the configuration and restart the compute node. If the compute node is unable to successfully complete POST with the default configuration, there might be a problem with the system board.

To specify the number of consecutive restart attempts that will trigger the Nx boot failure feature in the Setup utility, click System Settings > Recovery > Post Attempts. The available options are 3, 6, 9 and Disable.