[Dovecot] Questio about replication

[Patrick Westenberg]

Hi everyone,

this article 
(http://blog.dovecot.org/2012/02/dovecot-clustering-with-dsync-based.html) 
describes the situation for director/NFS-based clusters and SSH-based 
clusters.

Right now I'm running the first setup with one proxy/director and two 
backends (all 2.2.x) mounting an NFS-share but I'd like to get rid of
NFS (it's slow) and, if one backend is down, the proxy still sends the 
user to that backend.

The article says:
"High-availability non-NFS setup
One possibility is to use Dovecot proxies, which know which servers are 
down. Instead of directing users to those servers, it would direct them 
to replica servers."

My question is, if I can still use my proxy/direcot setup but every 
backend having it's local (or iSCSI-backed) ext4 storage and not using 
the SSH-based replication method?

Regards
Patrick