Realtime Filesystem Replication

[YOU]

Hello all,

I am in charge of a 4 server apache cluster and am looking for the best
replication tools for FreeBSD. The apache cluster is resource sharing so a
change on one of the servers really needs to occur on all in order to keep
the cluster accurate.

We tried CVS which worked but was difficult to manage. We are now looking
into CODA but are nervous about the "not for production" wording around
the man/doc pages.

I was hoping for some help on choosing the best adventure for my
institution.

Rob.