[Dovecot] No failover from director to backend?

[Daniel Parthey]

list at airstreamcomm.net wrote:
> Considering the intention of the director was to alleviate locking
> issues in a shared storage environment are there any current
> solutions to improving the scalability/availability of Dovecot by
> implementing an alternative message storage systems such as nosql or
> maybe object storage that could abstract away the complexity of
> replicating data?  We would love to finally have the ability to set
> our mail cluster on top of a storage subsystem that can span
> multiple geographic regions and do away with the NFS backend.

Key/value object store is planned for Dovecot v2.2 and
has been discussed in this thread:

http://dovecot.org/list/dovecot/2012-September/068257.html

Regards
Daniel
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