Installation guide

protocol. NFS Version 3 protocol does not have this file access limitation.
NFS Version 3 protocol supports 64-bit remote file access. Therefore, the
maximum file offset that can be accessed by Version 3 clients is 16 exabytes
(2**64-1 bytes).
Whether NFS Version 3 or Version 2 protocol is used is transparent to the
client: no action needs to be taken. When a DIGITAL UNIX Version 3.0
client mounts a file system from a server, it will use the Version 3 protocol
if the server supports it. However, the client will use the Version 2 protocol
when it mounts a file system from a DIGITAL UNIX Version 2.0 (or earlier)
server, or is mounting an ULTRIX file system.
To set up the NFS software, you use the nfssetup command. This
command operates the same on DIGITAL UNIX systems as it does on
ULTRIX systems.
Like an ULTRIX system, you list the files that you want to export to
remote systems in the /etc/exports file. This file has the same general
format on a DIGITAL UNIX system as it does on an ULTRIX system, with
some changes in the export options. However, the old ULTRIX export
options are accepted. See exports
(4) for more information.
If you want to have certain NFS file systems mounted automatically when
you boot your DIGITAL UNIX system, list those file systems in the
/etc/fstab file. The format of the DIGITAL UNIX fstab file is slightly
different from the format of the ULTRIX file. As in the ULTRIX fstab file,
information about each DIGITAL UNIX file system is contained on a
separate line in the fstab file. The contents and order of the line are the
same on DIGITAL UNIX and ULTRIX systems. The difference is that on
DIGITAL UNIX systems you separate fields on a line with spaces or tabs.
On ULTRIX systems, you separate fields by using a colon.
To mount an NFS file system, you enter the DIGITAL UNIX mount
command. You also use this command to display the list of file systems that
are currently mounted on the local system. This command is the same as
the ULTRIX mount command. For more information about this command,
see mount
(8).
You can display information about NFS servers by using the showmount
command. This command lists all mount points on the remote server,
displays the remote hosts current export list, and so on. This command is
the same on DIGITAL UNIX and ULTRIX systems. For more information
about the command, see showmount
(8).
To get the status of NFS activity, use the nfsstat command as you do on
an ULTRIX system. For more information about this command, see
nfsstat
(8).
4–14 Overview of DIGITAL UNIX System and Network Administration