27 Sep
2006
27 Sep
'06
1:19 a.m.
On Thu, 2006-09-21 at 21:16 -0400, Bill Boebel wrote:
Are there any big Dovecot sites (say 50,000-100,000) users on this list? Yes, Webmail.us. Many multiples of that number :)
Many means in the 10^6 order of magnitude? More?
80 backend IMAP servers. 5 front-end IMAP-proxy servers. All running Dovecot. The boxes are single AMD CPU, 1GB RAM, and 4 SATA drives. DRBD used to replicate data between servers.
AFAIK DRBD can replicate data at the block device layer. So I imagine only half of the backend servers are actually active (with a twin HA passive host, or you have 80x2 actual servers) and frontends are redirecting users to the correct backend IMAP server. Is this correct?
ciao,
Luca