Resize/Re-Image Hybrid Hosts

Resize/Re-Image Hybrid Hosts

This feature is only available in the Nerdio Manager Premium edition.

Nerdio Manager allows you to resize, and optionally re-image, Azure Stack HCI session host VMs. This can be performed on individual sessions host VMs or all session host VMs in a host pool.

Note: In order to re-image a session host VM, you must specify the Image VHD file to be used to create the Hyper-V VM.

To resize/re-image an individual Azure Stack HCI session host VM:

  1. Locate the Azure Stack HCI session host VM you wish to resize/re-image.

  2. From the action menu, select Resize/Re-image.

  3. Enter the following information:

    • vCPUs: Type the number of cores for the Hyper-V VM.

    • RAM (GB): Type the amount of RAM in GB for the Hyper-V VM.

    • Image Path: Optionally, from the drop-down list, select the generalized Image VHD file to be used for Hyper-V VM creation. That is, recreate the session host VM using the specified Image VHD file.

      • Node Name: From the drop-down list, select the node where the Hyper-V VM is to be located.

      • Switch Name: Type the name of the virtual switch to connect to the Hyper-V VM network adapter.

      • VM Path: Type the local path to the hosts directory.

        Note: The Hyper-V VM and OS disk VHD are created in this path in its own sub-folder.

      • Hyperv: Select the Gen2 option if the specified Image VHD file is taken from a second generation VM.

  4. Once you have entered all the desired information, select OK.

    The session host VM is restarted and the changes take effect.

To resize/re-image all Azure Stack HCI session host VMs in a host pool:

  1. Locate the Azure Stack HCI session host pool you wish to work with.

  2. From the bulk action menu, select Resize/Re-image all hosts.

  3. Enter the following information:

    • vCPUs: Type the number of cores for the Hyper-V VM.
    • RAM (GB): Type the amount of RAM in GB for the Hyper-V VM.

    • Image Path: Optionally, if you wish to re-image the session host VMs, type the local path to the generalized Image VHD file to be used for Hyper-V VM creation.

      • Hyperv: Select the Gen2 option if the specified Image VHD file is taken from a second generation VM.

    • Process Host in Groups Of: Type the number of concurrent operations for the host re-imaging.

      Warnings: A larger number of hosts selected allows the re-imaging process to complete quicker, but if there is an issue with the desktop image or Azure, many hosts may end up in an error state and unusable.

      You must select this value with care. For example, if you have 150 hosts in the pool, you do not want to want to re-image them one at a time. That would take too long. On the other hand, you do not want to run all 150 operations at the same time. That could overload your environment. So, you may want to run 25 operations per group.

    • Number of failures before aborting: Type the number of failed tasks before the process stops.

    • After first group is done, set remaining hosts to drain mode: Select this option to set all hosts that haven't yet been resized/re-imaged to drain mode as soon as the first group of hosts completes the resize/re-image process.

      Note: This ensures that users who connect to their desktop are only directed to a host session VM that has already been resized/re-imaged.

    • Schedule: Optionally, toggle on the Schedule to perform the re-imaging operations at a selected time. Otherwise, the re-imaging starts as soon as you select Run now.

      • Start Date: Type the date to start.

      • Time Zone: From the drop-down list, select the time zone for the Start time.

      • Start Time: From the drop-down lists, select the time to start.

      • Repeat: From the drop-down list, select the recurring schedule, if desired.

        Note: The drop-down has the option After Patch Tuesday. This allows you to create a recurring schedule based on Patch Tuesday.

        • Days After: If you selected After Patch Tuesday, type the number of days after Patch Tuesday to run the scheduled task.

    • Force Users to Log Off: From the drop-down list, select the time to wait before forcing users to log off.

      Note: You may force users to log off either immediately or after a specified time period. Optionally, by selecting Never, Nerdio Manager waits for all users to log off by themselves before re-imaging the host. That is, the re-imaging operation waits indefinitely until all users are logged off. If another scheduled re-imaging operation is due to run while it is waiting for the users to log off, the new scheduled task is skipped.

      • Set hosts to drain mode while waiting for users to log off: Select this option to set the hosts to drain mode while waiting for all the users to log off.

        Note: By default, this option is selected. You may only unselect it if Force User to Log Off is set to Never.

      • Send message while waiting for users to log off: Select this option and type the text of the message to send.

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

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