[THIN] Re: global or multi regional citrix farms

  • From: "Brian Madden" <brian@xxxxxxxxxxxxxxx>
  • To: <thin@xxxxxxxxxxxxx>
  • Date: Tue, 20 Apr 2004 14:34:48 -0400

Well, first of all, as for farm failover, that's certainly something
that can be done with relative ease at the web interface level.

Honestly, the Citrix part of the equation is simple compared to how
you're going to manage the "other" stuff that users need at each
location. (Home drives, policies, etc.) i.e. Can a user in North America
failover to Europe and still access their home drive?

With PS3 (MetaFrame Presentation Server 3.0 not Playstation 3), you
certainly have more options that would in theory support a single global
farm (preferred zones, real delegated admin, etc.) although I personally
would be a bit hesitant to deploy a single IMA DS in a "v 1.0" Citrix
product globally like this.

And, with the licensing changes, I'm not sure that there's any
compelling reason to do a single farm.

So, my gut feel is separate farms, web interface for everyone, and "fail
over" at the web interface level.=20

But then again, one farm would be easier to manage... I just don't know
if I'd do it yet. (I mean the IMA DB is still flat, so it's more like a
global NT4 domain vs. global AD.)

Brian

Brian Madden
brian@xxxxxxxxxxxxxxx
+1.202.302.3657
Visit www.brianmadden.com for in-depth Citrix, Terminal Server, and
server-based computing news and analysis, white papers, downloadable
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-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Lilley, Brian
Sent: Tuesday, April 20, 2004 1:22 PM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] global or multi regional citrix farms


Hi all,

Bit of an urgent request here... I need you guys that have designed big
Citrix
farms to give me the benefit of your experience, Brian.. Jim et al...
you know
who you are....

I have a customer who currently has around 50 1.8 farms dotted around
the
globe.  They are looking to consolidate into a Presentation Server III
farm.
The intial thoughts were to simply have one global farm with a highly
resilient datastore replicated around the globe.

My concern with the single global farm firstly, is the ability to
maintain the
integrity and availability of the Datastore.  The client are looking at
Oracle
on Sun kit for the Datastore.  Despite their expertise on high
availability
database solutions, I am still aware that the datastore can be easily
corrupted, i.e. running chfarm whilst the CMC is open...

My question is this... what would you advise for a 20,000 user Citrix
farm
split approx. equally across some 10 countries?

Are farm failover solutions available?



Thanks in advance...

B



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