Simplify the following text for a Grade 9 native English-speaking person.
Original: Network File System ( NFS ) is a network file system protocol originally developed by Sun Microsystems in 1984 , allowing a user on a client computer to access files over a network in a manner similar to how local storage is accessed .
Simplified: Network File System ( NFS ) is a network file system protocol . It was originally developed by Sun Microsystems in 1984 .