[THIN] Re: Scaling.....1 big server, or a few smaller ones?
- From: Angus Macdonald <Angus.Macdonald@xxxxxxxxxxxxxxxxxxx>
- To: thin@xxxxxxxxxxxxx
- Date: Wed, 11 Dec 2002 11:16:23 -0000
Lots of little ones, every time. Citrix doesn't really benefit from more
than 2 CPUs and lots of little ones will give you plenty of redundancy in
case of failure. It could well work out cheaper as well.
-----Original Message-----
From: Dez [mailto:Dez_is@xxxxxxxxxxx]
Sent: 11 December 2002 10:26
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Scaling.....1 big server, or a few smaller ones?
Hi
We currently run a 2 server XPa FR2 farm on W2k Server, one is a Compaq
DL330, 2x1Ghz P3, 1Gb RAM, and the other is a DL580, 2x 700 Xeon with 2Gb
RAM. This serves around 40 concurrent users running published desktop with
multiple apps, including Office2k with propietry macros, and about 3 other
financial apps, as well as IE etc. The servers are balanced to give about a
70% / 30% split of users towards the DL580 due to it being the more powerful
server.
In the near future, we may be doubling Citrix numbers to around 120, so will
need server upgrades/additions. My initial plan was to upgrade the DL580 to
4x Xeon and 4Gb RAM, and add another the same into the farm, then remove the
330 from actively hosting users and make it a test server. this would mean
around 60 users on each DL580.
My question is, is this a "best practice" solution as I read elsewhere that
it may be better to host less users on multiple servers rather than lots of
users on fewer large servers, and that 100 users was an absolute max, with
50 being a more acceptable limit. The problem with going down this route is
the increased Win2k Server licensing issues for more servers. Also, one of
our apps requires a visit/dial-in from the vendor to set it up for Citrix
use, which is charged on a per server basis. This also may cause physical
issues with rack space, UPS supply and KVM connections which could increase
costs further, so I am keen to stick with the original plan, but am a little
concerned there may be a better way.
thanks
Dez
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