MSFT Terminal Server vs Local Client Dyn AX, what is most efficient?

Last post 09-01-2008 11:38 PM by Arijit Basu. 3 replies.
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  • 08-28-2008 9:08 AM

    MSFT Terminal Server vs Local Client Dyn AX, what is most efficient?

    Hello everyone! 
    I am looking for some kind of assistance or an indication of where to get information on what is most efficient when it comes to allow access to users with an application server installed on a remote data center.
    The evidence we have done shows that connections through Microsoft Terminal Server are much more efficient than the use of the Local Client of Dynamics AX. Someone has any tip? Thank you very much in advance. 
  • 08-29-2008 7:48 AM In reply to

    Re: MSFT Terminal Server vs Local Client Dyn AX, what is most efficient?

    Hi,

       If the latency between the client is as the minimum requirement for AX 4/ 2009 then its recommended to use AX Client. In other cases where the latency is higher, you should go in for WTS. Now for accessing AX via WTS, you also need to consider TS sizing and scaling. Hence its advisable to split between WTS & direct AX Access based on parameters like latency, bandwidth, network, load etc. Now if you are using WTS, you should also consider WTS Sizing & additional hardware guides , both which can be obtained from MS site.

    Arijit Basu
    MVP - Microsoft Dynamics AX
    http://daxguy.blogspot.com
  • 09-01-2008 8:40 AM In reply to

    Re: MSFT Terminal Server vs Local Client Dyn AX, what is most efficient?

    Hi Sergio, 

    That is a really good reply by Arijit...

    I just wanted to throw a few facts and figures that would help you make a more informed decision.

    Advantages of using TS vs a Direct Link.

    1.       A TS session consumes a lot less bandwidth.. on an average I think a ts session takes 25-30 kbps (for a reasonably responsive session), where a direct ax links eats up 65 – 80 kbps.  Also latency has a much worse impact on a direct ax link, compared to a TS.. Generally speaking latency below 50ms is fairly acceptable (Note: MS recommend less than 5ms and a 100mbsp line).

    2.       I personally find TS’s a lot easier to maintain..... Easier to apply service packs/hot fixes. can control user sessions, etc

    Disadvantages of using TS Vs Direct Link.

    1.       Domain Rules... usually data centres host the servers on different domain from the site (or the computer the user is actually using)... this isnt normally a problem.. but If your network rules aren’t setup right, then resource sharing (printers, scanners, etc) might become an issue... something to keep an eye out for....

    2.       Actually on that note... be a extra bit carefully with printers....It’s better to have a dedicated print server that speaks directly to the terminal server...rather than carrying printers over user sessions.

    3.       Study the impact of other software on the TS (specifically Office)...not only does this have a cost implication (office licenses, etc).. but also has an impact on performance..... the AX client requires around 90-120 mb of ram... add the memory consumption of the other applications running on the TS and then multiply by the total number of users... this can be a fairly large number....on an average you should not have more than 30 users per ts.

    4.       Pst files are a completely different ball game.... if you not using crm (for contact/task/appointment) sych with outlook, then I would not recommend installing outlook on the terminal server.... you should be able to mail out standard reports as long as your connected to a working smtp.. look in to

     http://dynamic-ax.co.uk/DynamicsAXEmailWithoutOutlook.aspx

     

    Just because I have more point listed under the disadvantage section, dont not necessarily mean that TS is a bad option.... I would resonate Arijit’s words... its much better to have a direct link between all ax components... however, if your network can’t support this, then TS is a viable option.

    Hope this help... please let us know if you have any more questions.

    Regards,

    Mohammed Rasheed

    www.dynamic-ax.co.uk

    www.dynamic-ax.co.uk
  • 09-01-2008 11:38 PM In reply to

    Re: MSFT Terminal Server vs Local Client Dyn AX, what is most efficient?

    Hi,

      In case u require some documents on Terminal Server Scaling, drop me an email and I'll send u some documents across. Mohammed Rasheed has also given a nice reply. Hope we have been able to help you.

    Arijit Basu
    MVP - Microsoft Dynamics AX
    http://daxguy.blogspot.com
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