Add a New Session Host to a Dynamic Host Pool

Add a New Session Host to a Dynamic Host Pool

Once a host pool is created, you can manually add session hosts.

Tip: When using Dynamic Host pools it is recommended that you create the hosts with auto-scaling configured. See Enable Dynamic Host Pool Auto-scaling for more information.

To add a session host to a dynamic host pool:

  1. Locate the dynamic host pool you wish to work with.

  2. From action menu, select Hosts Add new.

  3. Enter the following information:

    Note: For several of the required parameters, you may filter the available choices by using the Resource Selection Rules. For example, you may filter the VM Size or OS Disk choices for Intel RAM-optimized VMs only. See Resource Selection Rules Management for details.

    • Host Count: Type the number of session hosts to add to the host pool during creation.
    • Host Name: Type the name of the newly added hosts for the Exact name, a Prefix or the Prefix+Pattern.
      • Exact/Prefix/Pattern: From the drop-down list, select whether to use an Exact name, a Prefix, or a Pattern.


        • Exact applies when adding a single host and specifying an exact name. For example, MYADVHOST.

        • Prefix can be used when creating multiple session hosts. The Prefix limit is 10 valid, Windows computer name characters. When using a Prefix, a unique suffix is automatically appended in the format "-xxxx", where xxxx are 4 random alphanumeric characters. For example: AVDHOST-s72h. Do not add a "-" to the Prefix.

        • Pattern can be used to specify an advanced naming convention for new hosts. Pattern characters must be enclosed in {} and can be # (for sequential numbers) and/or ? (for random alphanumeric characters). One # implies numbers from 0 to 9, two #s implies numbers of 0 to 99, etc.

          • Example 1: AVDHOST{###} (AVDHOST000..AVDHOST999).

          • Example 2: AVDHOST-{???} (AVDHOST-d83, AVDHOST-7sl, etc.).

    • Network: From the drop-down list, select the network. The network determines the Azure region of the VM.

    • Desktop Image: From the drop-down list, select the desktop image that is used as the golden image for newly created session hosts.

      Note: The Unmanaged Azure Compute Gallery image versions section is at the bottom of the list. These are unmanaged, backup versions of images that were created while activating staged images. These images can be used to restore any changes made to session hosts.

    • VM Size: From the drop-down, select the VM disk size and type for newly created session hosts.

    • OS Disk: From the drop-down list, select the OS Disk type and size for newly created session hosts.

      Note: This must be equal to or larger than the size of the Desktop Image selected above. Using Standard HDD (S-type) is not recommended. Premium SSD provides best performance.

    • Resource Group: From the drop-down list, select the resource group to contain the VMs.

    • Apply tags: Optionally, type the Name and Value of the Azure tag to apply to the session host.

      Note: You may specify multiple tags. See this Microsoft article for details about using tags to organize your Azure resources.

    • Schedule: Optionally, toggle on the schedule, and enter the schedule information, to run this job per the schedule.

    • When Host Count is greater than 1, enter the following:

      • Process Host in Groups Of: Type the number of concurrent operations when adding the new hosts.
      • Number of failures before aborting: Type the number of failed tasks before the process stops.

  4. Once you have entered all the desired information, select Run now (not scheduled) or Save & close (scheduled).

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