[Dovecot] Dsync replication

[Timo Sirainen]

On 18.7.2012, at 19.24, list at airstreamcomm.net wrote:

>> Anyway, in my small installation I'm using it in active-active mode and it works well enough. I've even configured my clients intentionally so that they use different servers.
> 
> Does dsync replication only work between two hosts?  In my scenario I would have two sites with X number of nodes at each with an NFS backend for each site.  For this example lets say I have site A with two nodes that mount one NFS share, and site B with two nodes that mount one NFS share.  Is it possible to implement dsync replication between these two clusters of nodes?

You can have as many hosts as you want, but you most likely don't want to use active-active setup via NFS or you'll run into NFS caching (= corruption) problems.