One change, Our Dells are 6350's not 8650's.   

-----Original Message-----
From: Pfefferkorn, Pete (PFEFFEPE) [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, February 19, 2002 2:13 PM
To: Exchange Discussions
Subject: Exchange 2,000 scalability question.


Well,

First let me apologize for the vagueness of this question.  Just starting to
read up on Exchange 2000.  I've been asked by management to spec out the
possibility of deploying Exchange 2,000 to all users on our campus (40,000
users).  I'm reading Tony Redmond's book on Exchange 2000 and it mentions on
page 21 that on 5.5 maximum user community was in reality about 3,000 per
server for a 8 way.   I know that really depends on the server setup, user
load, etc.  

Our Dell 8650's with 2-550mhz processors and 2 gig of memory is handling
about 3,000 users per server with 20 meg quotas per mailbox.  They are
active accounts (light to medium), so the 3,000 seems to match up since our
system CPU utilization averaging about 80-90% during peak times.

On the same page it states that Exchange 2000 states about 10,000 for a
single node cluster.

I'm wondering if anyone had opinions on this issue.  What is different about
Exchange 2000 that allows for more users per system.  Is this do to coding
changes in the store.exe or is it based on multiple stores per server?
Given we can get about 3,000 users per Exchange 5.5, I'm wondering what the
actual limit would be for Exchange 2000 per server.

Pete Pfefferkorn
Senior Systems Engineer/Mail Administrator
University of Cincinnati
51 Goodman Street
Cincinnati, OH  45221
Phone - (513) 556-9076
Fax -     (513) 556-2042


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