Curious if it is possible for the Apache web server to use an alternate DocumentRoot IF the default DocumentRoot is not available? (While the servers are running)
I doubt it is possible since Apache is most likely not listening for a response back from the default DocumentRoot?
The other option, if possible, is to have Heartbeat change the Mount point on the Apache machine if the machine serving up mnt1 (.103) is unavailable? (Heartbeat drop the mount to .103 and mount backup NFS2 (.104))