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A good way of sharing files across realservers is the coda filesystem,
which you can find at http://www.coda.cs.cmu.edu
It is more complicated than NFS to set up, but at least one of the
benefits is that files are cached on the realservers, so that if the
coda server should go down, then they will still be able to serve web
pages.
That way, you only need to change a file on the coda server and as
requests for that file come in to the realservers, they will retrieve
the file and store it locally. If there isn't enough disk cache locally,
then the most commonly requested files are kept locally, and infrequent
requests are fetched from the coda server.
You can also implement failover easily with coda by having more than one
server, further strengthening your system.
Take a look at their site. It is very informative.
Jason
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