The DOS access mode provides users and applications on UnixWare with simple DOS-style access to files located on a NetWare volume with no additional name space support. The NUC allows you to use UnixWare file manipulation commands on a DOS mode volume. There is only minimal support for changing permissions and no support for long file names, ownership and group changes, and links. This mode essentially allows the NetWare administrator to retain complete control over the volume, with no access control changes allowed from UnixWare. DOS name space access requires little administration on the NetWare server and has minimal performance impact on the NetWare server and on UnixWare.