1. A method, comprising: detecting, in a storage control unit, a change in a configuration of a plurality of logical subsystems included in the storage control unit; sending, by the storage control unit, a notification, wherein the notification indicates the change in the configuration of the plurality of logical subsystems; and receiving, by the storage control unit, data transfer requests directed at available logical subsystems in the storage control unit, wherein the available logical subsystems are determined based on the configuration of the plurality of logical subsystems.