The fncreate commands creates NIS+ tables and directories in the ctx_dir directory. The ctx_dir directory object resides at the same level as the NIS+ groups_dir and org_dir directory objects of the domain.
With a large domain, the additional space required on the NIS+ server could be substantial and in a large installation performance might be improved by using separate servers for FNS and the standard NIS+ tables. See Solaris Naming Setup and Configuration Guide for information on how to use separate servers for FNS and NIS+.
In a large, or mission-critical domain, FNS service should be replicated. See Solaris Naming Setup and Configuration Guide for information on how to replicate FNS service.