To access DFS internals directly, DFS-Perl requires two things: the DFS header files, usually in /usr/include/dcedfs, and the client side RPC stubs for the various DFS servers, generally in the library libdcedfs. Different vendors may include one, both, or neither of the two. Having finally seen the light, IBM/Transarc has made available the necessary components to access the DFS API under Solaris and AIX. You can download the appropriate distribution from: http://www.transarc.ibm.com/Product/EFS/DFS/libdcedfs/ Note that the distribution names the library libdfs. DFS-Perl expects the library to be named libdcedfs. Rename it or make a symlink.