How can I mount vxfs FS to two or more Solaris servers?

I want to have two Solaris servers share the same SAN vxfs Filesystem. Though at a time just one would be accessing the share. This is to allow for a quick failover in case the primary server undergoes an unplanned outage for some reason. From the [Oracle Solaris Cluster Software Installation Guide](http://docs.oracle.com/cd/E19680-01/html/821-1255/toc.html) , it seems a cluster needs to be setup and VxVM Software needs to be running on both servers to manage the cluster - which seems quite complicated in comparison to simply mounting a NAS share on two or more servers, for creating a shared filesystem. Could someone kindly point me in the right direction?