What hardware to handle this

[Henrique de Moraes Holschuh]

On Mon, 22 Nov 2004, Jim Bartus wrote:
> I have approx 500 users.  Of which probably only about 300 will be 
> connected at peak times, but they will be consantly connected in the 

Hmm, enough IO and RAM, and Cyrus will handle that easily.

> My major question is what kind of hardware will cyrus require to handle 
> that level of load?  Currently we were planning on buying a dual 3.0GHz 
> Xeon system with 2GB of ram running RHEL 3.0.  For storage it'll connect 
> via HBA to our EMC CX500 storage array.  Will that do it?  Does anyone 
> have anything similar setup?

I have. Dual Xeon 3Ghz, 4GB RAM, but no FC. We use local U320 SCA drives on
raid 10.  I'd put 4GB in that machine, if I were you. 2GB for 300 concurrent
users is cutting a little too close IMHO, you will probably get some
swapping.

The amount of CPU you (and I) have on these servers is quite certainly
overkill.  But better safe than sorry.

> One other question, is it possible to have the one IMAP server listen 
> for both encrypted and unencrypted connections?  We'll then use firewall 

Yes.  Just configure cyrus properly. A single service can support normal and
TLS connections. IMAPS (SSL) requires a service of its own, but you can
configure Cyrus to not keep these around any longer than necessary, so
that's no problem at all.

> policies to make sure anything from outside the lan is SSL'd.

Make that TLS'ed if you can :-)

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh
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