The Create User-Defined File System (CRTUDFS) command creates a file system that can be made visible through the integrated file system namespace, APIs, and CL commands.
The ADDMFS or MOUNT commands place the user-defined file system (UDFS) on top of the already existing local directory. You can create a UDFS in an ASP or independent ASP of your choice.
You can also specify the following items for a UDFS: