This paper describes the kernel structure for a distributed, transparent, highly available file system on a broadecast network. Distributed File System Kernel provides a session for the distributed file management operations and efficient replication management on a broadcast network. Via this session managed by the kernel, users take no more considerations on distributed environment in order to utilize the file replication architecture, all kinds of transparency and statistical information for the applied system interface. In a broadcasting network such as a local area network with broadcasting capabilities or a satellite network, messages can be delivered to all available nodes by a single broadcasting message. The facilities of a broadcast network provide easy synchronization and efficiency for the replicated file system. Broadcasting capability can simplify the design of a distributed file system kernel to manage replications.