[Dovecot] Is Dovecot Director stable for production??

[Aliet Santiesteban Sifontes]

Today I will try Dovecot Director for a setup using a Cluster Backend with
GFS2 on rhel5, my question is if is Director stable for use in production
for large sites, I know is mainly designed for NFS but I believe it will do
the job also for a cluster filesystem like GFS2 and should solve the mail
persistence problem with a node and locking issues.
I plan to add a layer behind a load balancer to do the stuff, I will
appreciate if you guys can point me to best practices in configuring the
director, or how the thing works since is new for me, I have seen the
example conf but I don't have clarity in some of the concepts and the wiki
is empty.
I use 2.0.6, thank's for a great job with dovecot.
best regards, Aliet