Managing the appliance > How the appliance handles an unexpected shutdown |  | next

# How the appliance handles an unexpected shutdown

The appliance has features, such as automatic backup and high availability, to enable it to automatically recover from an unexpected shutdown, and managed resources continue to operate while the appliance is offline. However, Hewlett Packard Enterprise recommends that you use the appliance backup features to ensure that the appliance is backed up daily, and when you make significant configuration changes, such as adding or deleting a network.

### Appliance recovery operations

When the appliance restarts, it performs the following operations:

- Detects tasks that were in progress and resumes those tasks, if it is safe to do so. If the appliance cannot complete a task, it notifies you that the task has been interrupted or is in some other error state.

- Attempts to detect differences between the current environment and the environment at the time the appliance shut down, and then refreshes its database with the detected changes.

  If you determine that the appliance data does not match the current environment, you can request that the appliance refresh the data for certain resources, such as enclosures.

### Appliance recovery during a firmware update of a managed resource

If the appliance shuts down during a firmware update of a managed resource, when the appliance restarts, it detects the failed update and marks the firmware update tasks as being in an error state. To update the firmware for this resource, you must re-initiate the firmware update task.

See also

- Managing the appliance (top of chapter)

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