NAS was initially designed for data sharing in a LAN environment and incorporates file system capabilities into the storage device. In a NAS environment, servers are connected to a storage system by a standard Ethernet network and use standard file access protocols such as NFS and CIFS to make storage requests. Local file system calls from the clients are redirected to the NAS device, which provides shared file storage for all clients. If the clients are desktop systems, the NAS device provides "serverless" file serving. If the clients are server systems, the NAS device offloads the data management overhead from the servers.