[Dovecot] Effects of migration

[Jose Celestino]

Words by Andy Dills [Wed, Mar 05, 2008 at 11:23:08AM -0500]:
> 
> So, to follow up to my previous thread, we just successfully migrated our 
> NFS-based mail cluster from qmail pop, courier imap, and bincimap to 
> dovecot 1.1rc1.
> 
> Overall the transition was very smooth, the only unexpected adjustment was 
> having to implement ntpd on each box, rather than doing an hourly ntpdate 
> against our local ntpd server, to prevent dovecot from crashing itself 
> from too much drift.
> 
> The impact has been severe! Even with NFS-stored indexes, our netapp is 
> seeing 1/6th of the NFS ops per second, and its CPU utilization is now at 
> 1/3rd previous levels.
> 

Yeah. We went from a solution like yours to a based on dovecot imapd and
we reduced the servers in 1/3 and the server load to half. Pretty
impressive :)

-- 
Jose Celestino
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