Operating method of distributed multi-layer system for weapon based on service-scale

Disclosed is an operating method of a distributed multimedia system for a weapon system based on a service unit. According to the embodiments of the present invention, an operator sets a desirable service and a degree of service availability and each node is controlled by referring to information about the operation state and availability of each local node based on the set service and degree of service availability, thereby easily applying a redundant operation suitable for various features in system operation. Also, service management suitable for situations can be achieved and the availability of the nodes can be improved by reflecting the state monitoring information of the entire system in the redundant operation of the local node for each service.