RE: Dual or Quad for 4000 users

  • From: "Douglas M. Long" <admindoug@xxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Tue, 7 Mar 2006 10:46:32 -0500

This is exactly what I was thinking. Start looking at IOPS. Determine the
IOPS characteristics of your users and then build disk subsystem to
accommodate it. You generally have 3 levels of users and a percentage at
each level. Also make sure you have enough GCs in your environment. Sounds
like there should probably be a lot more homework before any decisions are
made. Make sure you watch the exchange web casts available. Don't think they
are for dummies. A couple of them have some really top notch information in



And what is the calculated IOPS per user?


Basing on what I know about other large deployments, I would guess that you
are probably OK assuming your disk subsystem can meet the IOPS load.


In the general case, as I'm sure you know, Exchange is I/O bound, not
processor bound.


Are you going to have a dedicated bridgehead server plus a couple of FE
servers? Seems like that would be a good idea too in this size of

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