I'm exploring the possibility of load balancing 2 web servers and have both access an NFS share on an NFS server. I'm wondering which types of data would need to reside on the webservers and the NFS server. Would the entire web directory (HTML, CSS, images, documents) all reside in the NFS server and only Apache would sit on the web servers?
Typically someone would run apache on two difference servers and, in your case, the fully documents directory tree would be shared, but each server would keep it basic apache configuration files, logfiles, etc.