Terminal Server capacity

Posted on 2006-05-17
Last Modified: 2008-02-01
I'm having capacity issues with my Terminal Servers

according to this document:


An HP BL20p G2 blade with 2x 2.4 GHz should be able to manage 200 users, but it starts to reject logins between 40 and 50 users

Have you ever had capacity issues with your terminal servers?  What have you done to combat the issue?
Question by:Marketing_Insists
    LVL 8

    Expert Comment

    When you say it is rejecting, could you be more specific.  Could it be possible it is rejecting due to available TS licenses?  Is there a cap specified in the number of users on the properties on the connection in the TS Configuration console.  Also, when the server hit 40-50 users, how much ram and cpu utilization are you seeing.  Finally, are you having users log in with full desktops or are we talking exported applications?

    Most people that I have discussed TS with agree that TS really seems to cap out around 60-80 users and that after that a more specific environment like Citrix seems to work best.  However, a lot of it depends on what the users are using.  If we have 70 users using Outlok we have some very serious memory usage. :)


    Author Comment

    No limit has been set for the users in the TS configuration console, they hit a load balanced cluster via round robin.
    They are using full desktops with a full compliment of the latest Office products.

    memory usage is about 3 gigs out of an availalbe 8 gigs of physical memory,
    proccessor is between 10 and 15%

    I don't see errors for TS licenses, in event viewer.

    The errors I see are 1500 errors, e.g:
      DETAIL - Insufficient system resources exist to complete the requested service.
      Windows cannot log you on because your profile cannot be loaded.
      Check that you are connected to the network or that your network is functioning
      correctly.  If this problem persists contact your network administrator.

    Author Comment

    ...where the above 1500 error does not make since given plenty of available systems resources.

    LVL 8

    Accepted Solution

    I have seen a few mentions of some issues with CTFMon and office 2k3 causing TS problems.  You could try modifying the office config to remove alternative user imput services.   Is the Office running at the latest service pack version?  

    This would be a tough test in some wasy, but I would be tempted to take the server off the main network, and see how many user's you can log on if you don't open any apps.  If you find you can go and open over your current 50 user limit, go back and start opening some office apps on all those sessions.  Then if it allows you to open in all those sessions, try logging on some additional users.  

    Author Comment

    OK Thanks!
    I'll try maxing out the logins and configuring office.
    , also, wondering if it could be printer drivers - we basically install what ever the hell the user wants - 1 gig of drivers dosn't seem right.

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