The NFSv4 filesystem used
We decided to use NFSv4 along with NFSRoot and the exname option. This enabled us to export filesystems from different physical locations and mount these directories on the client by using a single NFS mount command. We implemented the layout that is illustrated in Figure 10-4.
Figure 10-4 NFSv4 filesystem layout
For more information about NFS v4, refer to Securing NFS in AIX: An Introduction to NFS v4 in AIX 5L Version 5.3, SG24-7204.