Configuring an NFS Client
If your FreeBSD machine will be mounting NFS shares from other servers, you will need to configure it as a client. Technically this isn't really necessary—you can mount an NFS share in a rudimentary fashion right out of the box. However, configuring the system as an NFS client gives you a few features that ensure speedy and reliable performance.
To set up an NFS client machine, simply enable the following line in /etc/rc.conf:
This setting enables the NFS Input/Output Daemon, nfsiod, which helps to streamline NFS client requests and tunes a few kernel settings to improve access time. This is all handled automatically in the /etc/rc.network script at boot time, along with the NFS server settings ...