Auto-scale Session Host Scale In-Out Restrictions

Individual session host VMs within host pools with auto-scale enabled can be excluded from scale in and/or scale out indefinitely, or for a predefined period. This is especially useful when certain session host VMs are not healthy and need to be put into maintenance mode or when long running operations must not be interrupted during a scale in window.

To restrict scale in or scale out for a session host:

1. Locate the session host you wish to work with.

2. From the more options menu, select Exclude from auto-scale.

3. Enter the following information:

   • Exclude host from scale IN operations: Enable this option to exclude host from scale IN operations.

     • Host will be excluded from scaling indefinitely: Select this option to exclude from scaling indefinitely.

     • Host will be excluded from scaling until: Select this option to exclude from scaling until the specified date and time.

   • Exclude host from scale IN and scale OUT operations: Enable this option to exclude host from both scale IN and scale OUT operations.

     • Host will be excluded from scaling indefinitely: Select this option to exclude from scaling indefinitely.

     • Host will be excluded from scaling until: Select this option to exclude from scaling until the specified date and time.

4. Once you have made the desired selections, select Confirm.

   Note: The scale in restrictions take effect once the task completes. You can see the task's progress in the Host Pool Tasks.