[Dovecot] Hints for a NFS-Setup

[Patrick Westenberg]

Timo Sirainen schrieb:
> On Fri, 2012-03-30 at 21:37 +0200, Patrick Westenberg wrote:
>> MTA --(lmtp)--\               /--(lmtp)-->  backend1 --\
>>                   -- director --                         -- NFS
>> MTA --(lmtp)--/               \--(lmtp)-->  backend2 --/
>>
>>
>> IMAP-User -->  frontend1 --\              /--(imap)-->  backend1 --\
>>                              -- director --                         -- NFS
>> IMAP-User -->  frontend2 --/              \--(imap)-->  backend2 --/
>
> The director above must be the same one for both IMAP and MTA.

I know and it is meant to be the same in this drawing.

However, in this scenario the director is a single point of failure.
What would be the best way to get loadbalancing and high-availability?

Patrick