NFS Services Administrator's Guide

Introduction
New Features in AutoFS
Chapter 136
• NFS loopback mount – By default, AutoFS uses the Local
FileSystems (LOFS) mounts for locally mounted filesystems. AutoFS
provides an option to allow loopback NFS mounts for the local
mount. This is a useful option in High Availability NFS
environments.
• Client-side Failover support - AutoFS enables a mounted NFS
read-only filesystem to transparently switch over to an alternate
server if the current server goes down.