LARGE single-system Cyrus installs?

[Xue, Jack C]

At Marshall University, We have 30K users (200M quota) on Cyrus. We use
a Murder Aggregation Setup which consists of 2 frontend node, 2 backend
nodes and a master node (all are Dell 1855 Blades). We then further
divide the users into 2 storage partitions on each backend (Totals 4
cyrus partitions, all are then mounted on an EMC SAN).   

We have never experienced performance problems. The daily mail processed
on our SMPT gateway usually amounts to 2 million messages, 90%-95% of
them are SPAM and are rejected/quarantined at the gateway. So, our
internal servers only process from 100,000 to 200,000 messages a day.


Jack C. Xue

-----Original Message-----
From: info-cyrus-bounces at lists.andrew.cmu.edu
[mailto:info-cyrus-bounces at lists.andrew.cmu.edu] On Behalf Of Vincent
Fox
Sent: Thursday, October 04, 2007 2:05 PM
To: info-cyrus at lists.andrew.cmu.edu
Subject: LARGE single-system Cyrus installs?


Wondering if anyone out there is running a LARGE Cyrus
user-base on a single or a couple of systems?

Let me define large:

25K-30K (or more) users per system
High email activity, say 2+ million emails a day

We have talked to UCSB, which is running 30K users on a single
Sun V490 system.  However they seem to have fairly low activity
levels with emails in the hundred-thousands range not millions.

So far that's the only other place we've talked to.  Everyone else
seems to spread out 5K users on a large number of backends.

We have 60K users, and were trying to run them spread across
2 systems and ran into problems when Fall quarter started and
the load just skyrocketed.  Email volume today 3.6 million.