23 Jan
2010
23 Jan
'10
12:04 a.m.
You guys must serve a pretty heavy load. What's your peak connection count across all those machines? How's the load? We recently went through a hardware replacement cycle, and were targeting < 25% utilization at peak load so we can lose one of our sites (half of our machines are in each site) without running into any capacity problems. We're actually at closer to 10% at peak, if that... Probably less now that we've disabled noac. Dovecot is fantastic :)
I think the peak is around 10000 concurrent connections, out of about 500,000 mailboxes. The servers are way overspecced, so we can lose half of them. The netapps are also being used for webservices.
Cor