The 80 's classic NFS and AFS

NFS: (c/S mode)

Approximate structure:

　

1985 Sun Corporation developed a network-shared file system (FileSystem) based on UDP

NFS is a client/server model consisting of a series of NFS commands and processes, with TCP-based transmissions added to the third edition.

　　

Afs:

Approximate structure:

Processing Flow:

Node Identity:

Ptserver: Responsible for user and authentication

Vlserver: Responsible for volume location record and query

Fileserver: Responsible for processing files and directories located within AFS volumes

The 80 's classic NFS and AFS