The NextMedia event occurs when a backup or restore operation exhausts the media in a device indicated as a target or source for the operation.
Private Sub object_NextMedia( Message as String )
object
Expression that evaluates to an object in the Applies To list
Message
String that contains descriptive message text
HRESULT NextMedia(SQLDMO_LPCSTR Message);
With SQL-DMO, use the SQLBackup, SQLRestore, and SQLVerify methods to start a backup or restore operation.