This phase applies to rebuild and duplexing rebuild processes. During the Rebuild Cleanup Phase, each connector receives a Rebuild Cleanup event to specify that the connector is to clean up any information that pertains to the old structure being discarded. As each connector completes its cleanup processing, it notifies the system through its response to the Rebuild Cleanup event. When the system has received all cleanup confirmations, the Rebuild Cleanup Sync Point is reached. The system notifies all connectors through the Rebuild Process Complete event, deallocates the old structure, and allows connectors to access the new structure again.