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The classification of hardware errors is an essential prerequisite for handling these.

Hence, in a first step, hardware errors have to be classified according to the actions which need to be taken for recovery:

  • Corrected Errors (CE): These are automatically detected and corrected by the hardware, meaning that the application does not need to take any action.
  • Uncorrected Recoverable Errors (UCR): These are non-fatal but they require an action from the application side to survive.
  • Uncorrected Errors (UE): These are fatal and always require a full system reboot. 

 

Failure Model
Classification of system errors and adequate recovery actions