NFS Services Administrator's Guide

Introduction
New Features in NFS
Chapter 1 25
Figure 1-1 shows the server view of the shared directories.
Figure 1-1 Server View of the Shared Directories
If the administrator shares /, and /opt/dce, then the NFS client
using NFSv2 and NFSv3 can mount / and /opt/dce. Attempts to
mount /opt will fail.
In NFSv4, the client can mount /, /opt and /opt/dce. If the client
mounts /opt and lists the contents of the directory, only the directory
dce is seen. If you change directory (cd) to dce, the contents of dce is
not visible. The client must specifically mount /opt/dce to see the
contents of dce. Future versions of HP-UX will allow the client to
cross this filesystem boundary on the server.
• String Identifiers
NFSv4 represents users and groups in the following manner:
users @ domain
Or
group @ domain
Where:
users specifies the string representation of the user
group specifies the string representation of the group
domain specifies a registered DNS domain or a sub-domain
of a registered domain