The NFS supports file access to the z/OS UNIX file system. z/OS UNIX supports a set of standards called the portable operating system interface (POSIX). See z/OS UNIX System Services User's Guide for more information about POSIX compliance. With z/OS UNIX, the NFS performs the following functions.

• Supports hierarchical directories
• Allows file names up to 255 characters in length
• Allows path names up to 1023 characters in length
• Supports mixed-case names and special characters, except nulls, slashes, and commas in file and path names
• Supports UNIX-style file access permissions
• Supports group ID and user ID at the file level
• Supports the full NFS protocol (including external links)
• Enables data sharing between clients and the z/OS UNIX
• Enables you to link z/OS conventional MVS data sets to a POSIX path name