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## Restore Host Power State at Restart

Use the `/SP/policy HOST_LAST_POWER_STATE` property to control the behavior of the server after an unexpected power outage. When external power is restored, the Oracle ILOM service processor starts to run automatically. Normally, the host power is not turned on until you use Oracle ILOM to turn it on.

Oracle ILOM records the current power state of the server in nonvolatile storage. If the `HOST_LAST_POWER_STATE` policy is enabled, Oracle ILOM can restore the host to the previous power state. This policy is useful in the event of a power failure, or if you physically move the server to a different location.

For example, if the host server is running when power is lost and the `/SP/policy HOST_LAST_POWER_STATE` property is set to disabled, the host server remains off when power is restored. If the `/SP/policy HOST_LAST_POWER_STATE` property is set to enabled, the host server restarts when the power is restored.

- At the Oracle ILOM `->` prompt, type:

      -> set /SP/policy HOST_LAST_POWER_STATE=enabled

  where value can be:

  - `enabled` – When power is restored, returns the server to the state it was in before the power was removed.

  - `disabled` – Keeps the server off when power is applied (the default).

    If you enable `HOST_LAST_POWER_STATE`, you should also configure `/SP/policy HOST_POWER_ON_DELAY`. For further information, see Disable or Re-Enable Power-On Delay .

##### Related Information

- Disable or Re-Enable Power-On Delay

- Specify Host Power State at Restart

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