Serviceguard NFS Toolkit A.11.31.02, A.11.11.06, and A.11.23.05 Administrator's Guide

Figure 1-5 Server-to-Server Cross Mounting
The advantage of server-to-server cross-mounting is that every server has an identical
view of the file systems. The disadvantage is that, on the node where a file system is
locally mounted, the file system is accessed through an NFS mount, which has poorer
performance than a local mount.
Each node NFS-mounts the file systems for both packages. If Node_A fails, Node_B
mounts the filesystem for Pkg_1, and the NFS mounts are not interrupted.
18 Overview of Serviceguard NFS