When you install or upgrade to NetWare 6, NLS is automatically installed. During the installation of NetWare 6, you installed a server license. After the install you must install user licenses using Novell iManager. For more information on installing licenses, seeManaging License Certificates.
For fault tolerance, you should have NetWare 6 (or NLS) running on a second server in same partition as the other server.
NLS-enabled applications can use the licensing service. See the product-specific documentation for information about implementing the licensing services for that product.