[THIN] Re: Citrix farms over a WAN

Well in this case it is and really the only solution given their business 
drivers behind things.
 
T.

 
________________________________

From: thin-bounce@xxxxxxxxxxxxx on behalf of Joe Shonk
Sent: Wed 24/05/2006 3:23 p.m.
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Citrix farms over a WAN


Or prehaps Citrix isn't the best solution in this senario.... As much as we all 
love and know citrix, it's not always the ideal solution.

Joe


On 5/23/06, Tony Lyne <Tony.Lyne@xxxxxxxxxxx> wrote: 

        Thanks guys,

         

        So really the outcome from this thread is what I expected...

         

        Unfortunately in the ideal world I would have a centralized datacenter, 
but in this case it's physically impossible due to a number of constraints, 
business and technology wise.

         

        One thing I've been possibly considering is the use of a traffic 
shaping appliance like an Exinda optimizer to quantify IMA traffic and then 
shaping it to reduce impact on the WAN, and also from there look at compressing 
it further.

         

         

        Tony Lyne
        Consultant

        Senior Systems Engineer 



 

 

+64 6 353 7300

 <http://www.gen-i.co.nz> 

+64 6 356 6800

+64 27 472 0696 

tony.lyne@xxxxxxxxxxx <mailto:tony.lyne@xxxxxxxxxxx> 

www.gen-i.co.nz <http://www.gen-i.co.nz> 

        172-174 Broadway Avenue, PO Box 1470,
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"This communication, including any attachments, is confidential. If you are not 
the intended recipient, you should not read it - please contact me immediately, 
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________________________________


        From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On 
Behalf Of Andrew Wood
        Sent: Tuesday, 23 May 2006 8:07 p.m.

        
        To: thin@xxxxxxxxxxxxx
        Subject: [THIN] Re: Citrix farms over a WAN

        

         

        At pubforum the citix guys mentioned an NHS site that had a large 
number of zones (over 10 iirc). The citrix guys thought it would fall over, but 
they set it up in the labs and it didn't.

         

        That wasn't a wan per se tho' .... just popped it in for the large 
number of zones.

         

        I would have thought besides the high levels IMA traffic going 
backwards and forwards, the many policies you'd probably have to put in place 
and then manage, the distributed/replicated(?) nature of the licensing services 
and access to the datastore, the difficulty in ensuring standardised deployment 
patching and application updates across wan links, possibility of difficulty in 
managing the user loads in the event of a disaster, and depending on the nature 
of the apps scary problems with home drives, printing and profiles, and 
increased costs of adding in bandwidth optimisation technologies it should be 
absolutely fine. 

         

        
________________________________


        From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On 
Behalf Of Steve Greenberg
        Sent: 23 May 2006 06:21
        To: thin@xxxxxxxxxxxxx
        Subject: [THIN] Re: Citrix farms over a WAN

        I have to agree this is odd. It is more common to build two highly 
fault tolerant data centers and then have the 27 sites access the data centers. 
In fact, this would be a significantly better approach for many reasons! Sorry, 
I realize you weren't asking for an alternate design :-) 

         

        Steve Greenberg

        Thin Client Computing

        34522 N. Scottsdale Rd D8453

        Scottsdale, AZ 85262 

        (602) 432-8649

        www.thinclient.net 

        steveg@xxxxxxxxxxxxxx 

         

        
________________________________


        From: thin-bounce@xxxxxxxxxxxxx [mailto: thin-bounce@xxxxxxxxxxxxx 
<mailto:thin-bounce@xxxxxxxxxxxxx> ] On Behalf Of Joe Shonk
        Sent: Monday, May 22, 2006 9:26 PM
        To: thin@xxxxxxxxxxxxx
        Subject: [THIN] Re: Citrix farms over a WAN

         

        Odd ball indeed... Most corporations have their WAN links go to their 
primary Data Center and to their DR site...  So only two sets of servers are 
required.
        
        The key will be to keep the number of zones to a minimum.
        
        Joe

        On 5/22/06, Tony Lyne <Tony.Lyne@xxxxxxxxxxx> wrote:

        Hey Mark,

         

        Yes it's a bit of an odd ball design request. 

         

        The driver behind this particular design is they need a 24x7 uptime and 
have each site totally autonomous in the case of a WAN failure. But don't want 
the hassle of having 27 separate farms to manage (understandable).

         

        Tony Lyne
        Consultant

        Senior Systems Engineer  



 

 

+64 6 353 7300

 <http://www.gen-i.co.nz> 

+64 6 356 6800

+64 27 472 0696 

tony.lyne@xxxxxxxxxxx <mailto:tony.lyne@xxxxxxxxxxx> 

www.gen-i.co.nz <http://www.gen-i.co.nz> 

        172-174 Broadway Avenue, PO Box 1470 ,
        Palmerston North, New Zealand

"This communication, including any attachments, is confidential. If you are not 
the intended recipient, you should not read it - please contact me immediately, 
destroy it, and do not copy or use any part of this communication or disclose 
anything about it. Thank you. Please note that this communication does not 
designate an information system for the purposes of the Electronic Transactions 
Act 2002."

         

        
________________________________


        From: thin-bounce@xxxxxxxxxxxxx [mailto: thin-bounce@xxxxxxxxxxxxx 
<mailto:thin-bounce@xxxxxxxxxxxxx> ] On Behalf Of Landin, Mark
        Sent: Tuesday, 23 May 2006 9:26 a.m.
        To: thin@xxxxxxxxxxxxx
        Subject: [THIN] Re: Citrix farms over a WAN

         

        That seems like one ... unorthodox? ... architecture to me. Care to 
clarify the details that are leading to this design? (Not saying it's wrong, 
just saying I can't think of the real-world problem this solution is looking 
for...)

                 

                
________________________________


                From: thin-bounce@xxxxxxxxxxxxx [mailto: 
thin-bounce@xxxxxxxxxxxxx <mailto:thin-bounce@xxxxxxxxxxxxx> ] On Behalf Of 
Tony Lyne
                Sent: Monday, May 22, 2006 4:02 PM
                To: thin@xxxxxxxxxxxxx
                Subject: [THIN] Citrix farms over a WAN

                Guys/Gals,

                 

                I've been given a project to scope out a citrix farm design 
which consists of 27 sites with 2 load balanced Citrix servers on each site. 
The client needs it in this configuration for specific redundancy reasons (ie 
WAN redundancy etc...)

                 

                Does any one know what the limitations on having a single farm 
span across 27 sites (limited bandwidth available as well).

                 

                I was planning on specifying a zone for each site, and 
disabling load balancing across zones in MPS 4.

                 

                Any other pointers would be much appreciated.

                 

                Thanks,

                Tony Lyne
                Consultant

                Senior Systems Engineer 



 

 

+64 6 353 7300

 <http://www.gen-i.co.nz> 

+64 6 356 6800

+64 27 472 0696

tony.lyne@xxxxxxxxxxx <mailto:tony.lyne@xxxxxxxxxxx> 

www.gen-i.co.nz <http://www.gen-i.co.nz> 

                172-174 Broadway Avenue, PO Box 1470 ,
                Palmerston North, New Zealand

"This communication, including any attachments, is confidential. If you are not 
the intended recipient, you should not read it - please contact me immediately, 
destroy it, and do not copy or use any part of this communication or disclose 
anything about it. Thank you. Please note that this communication does not 
designate an information system for the purposes of the Electronic Transactions 
Act 2002."

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