NFS Services Administrator's Guide

Configuring and Administering NFS
NFS Client and Server Transport Connections
Chapter 260
On the HP-UX release 11.11, the default number of nfsd processes
running on an NFS server is 16 nfsd processes over UDP transport (
NUM_NFSD variable in the /etc/rc.config.d/nfsconf file), plus one
nfsd process over TCP transport.
You can start a daemon for either transport type or both. Here’s a list of
ways you can specify the NFS server daemon:
• You can start a NFS daemon that will run over all the supported
transports, including UDP and TCP. Type: /usr/sbin/nfsd -a. For
HP-UX release 11.0, you must set the NFS_TCP environment variable
to 1 in the /etc/rc.config.d/nfsconf configuration file in order to
support the TCP transport.
• You can start the NFS daemon over either protocol you choose: TCP
or UDP. To specify one or the other, type: /usr/sbin/nfsd -p
<transport_protocol>, where <transport protocol> is either
TCP or UDP.
• You can start the daemon for the transport protocol that the device
specifies. Type: /usr/sbin/nfsd -t <device_name>, where
<device_name> is the name of the device that specifies the transport
protocol you want to use.
NOTE You can use the /usr/sbin/nfsd <num_nfsd> command to start more
NFS server daemons (nfsds). The value of the <num_nfsd> option is the
suggested number of file system request daemons that will start. The
actual number of daemons started is one daemon to support kernel TCP
threads, plus a number of UDP daemons. The number of UDP daemons
started is the value of num_nfsd rounded up to a multiple of the number
of active CPUs in the system. There must be no nfsd process running on
the NFS server when issuing the /usr/sbin/nfsd <num_nfsd>
command.
For more information, type man 1M nfsd at the HP-UX prompt.
Severing the Connection
The server connection is terminated by nfsd when one of the following
occurs: