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Auto scale not working as expected.

Jerry Junior 60 Reputation points
2025-08-18T09:43:09.4733333+00:00

I deployed Scaling plan - auto scale for a Host Pool with 20 session hosts for 150 users. User's shift begin at 8 AM US time and all users expected to logon to AVD at 1 PM. They will then log out at 5 PM. So I configured Ramp up, peak, ramp down, off peak hours as suggested from Microsoft document but user reported they have to wait for VM to start - meaning that Auto scale not preparing additional machine to ready for new users. Could anyone help to create a plan based on the above requirement or at least an example would be nice. Thanks.

Windows for business | Windows Client for IT Pros | Devices and deployment | Configure application groups
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  1. Domic Vo 1,015 Reputation points Independent Advisor
    2025-08-19T07:36:58.59+00:00

    Dear Jerry Junior,

    Based on your scenario, it appears the Ramp-up period may not be starting early enough to ensure session hosts are fully powered on and available by 1 PM. To address this, we recommend the following adjustments:

    Phase Time Range Configuration Notes
    Ramp-up 12:00 PM – 1:00 PM Begin powering on session hosts gradually to meet demand
    Ramp-up 12:00 PM – 1:00 PM Begin powering on session hosts gradually to meet demand
    Peak 1:00 PM – 5:00 PM Ensure all required hosts are running to support full user load
    Ramp-down 5:00 PM – 6:00 PM Begin deallocating unused hosts
    Off-peak 6:00 PM – 12:00 PM (next day) Minimal hosts running or all deallocated

    I hope this helps. Just kindly tick Accept Answer that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

    Best regards,

    Domic Vo

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