Implementations are disclosed that provide protocols for connecting an intelligent service module within a storage area network. This is realized by arranging at least one sub-coordinating apparatus, namely, a monitoring apparatus, in respective wireless network, and by arranging a coordinating apparatus, namely, an allocation apparatus in the whole network. The aerobic zone is an airlift reactor that contains air diffusers at the bottom of the zone to introduce air into the zone. By supplying the brake by the intermediate circuit, an additional voltage source for the brake can be spared and the brake can be implemented extremely simply.