This unknown is in the clustering spec [1]:
XXX - what to do about "lib" and "docroot" directories?
I just went and looked at a V2 server instance and noticed it has a copy of "index.html" from the DAS docroot. My guess is that it is
synchronized. I can't test right now -- I have a long-running process munching all of my bandwidth.
Jan - do you know how docroot is handled in V2 with clustered instances? Is it synchronized automatically? Can an instance specify its own private docroot?
[1]
http://wiki.glassfish.java.net/Wiki.jsp?page=V3.1Clustering