2 Replies Latest reply on Dec 13, 2017 10:21 AM by JayeshPatel65

    When creating an rdsh farm, I didnt understand fully what Min/Max was really for.... and can I change sessions per server later?

    JayeshPatel65 Novice

      when creating my RDSH farms, I didnt really understand what the Min Servers was for (i understand i think max) but not really minimum. can you explain that in more detail?

       

      also, is it possible to adjust the maximum number of sessions per rds server after the farm has been created ? I didnt seem to be able to do so,

       

      thanks again

      jayesh

        • 1. Re: When creating an rdsh farm, I didnt understand fully what Min/Max was really for.... and can I change sessions per server later?
          peterbrown05 Expert
          VMware Employees

          These really provide control over 'power management' (or as might be better termed 'cost management!' on Azure)

          Specifically, lets not have servers running when we don't need them. If we can power down (Deallocate) servers, then we only pay the storage cost (which is significantly less than the compute cost)

           

          Min / Max help determine the minimum and maximum size of servers running in the environment for the farm at any time (based on user demand).

           

          Max servers governs the maximum number of vm's that will be created of the required size. if all powered on, this would govern the max cost of compute (network charges will vary based on use) that the farm would cost.

             The maximum number of users that could use a farm = MaxServers * #Sessions per server

           

          Min servers sets the minimum servers that will run if no users are accessing the environment. Having >=1 server running means that a user will always be able to login.

           

          It is possible to set min=0 (this means when =0 that you are not paying for compute for that farm), however the initial login experience for the first user in that cause would result in a long logon time (as the server first needs to boot and prepare itself for use - typically 5-6mins) It is therefore recommended to set Min >=1 , and consider your typical user demand. It does take time for a new server to power on and prepare itself for use (5 to 6 minutes) and therefore you need to consider what Min servers should be configured to meet typical logon storm user demand.

           

          The user docs cover this in a bit more eloquent detail than I've done here! see Create a Farm in the docs.

           

          As for adjusting the sessions per server after farm has been created; you are right.... today, adjusting that later is not possible. But, we will be looking at making that possible in the future,

           

          cheers

          peterb