You must install at least one DEM Worker and one DEM Orchestrator. The installation procedure is the same for both roles.

About this task

DEM Orchestrators support active-active high availability. Typically, you install a single DEM Orchestrator on each Manager Service machine. You can install DEM Orchestrators and DEM workers on the same machine.


  1. Right-click the setup__vrealize-automation-appliance-FQDN@5480.exe setup file and select Run as administrator.
  2. Click Next.
  3. Accept the license agreement and click Next.
  4. On the Log in page, supply administrator credentials for the vRealize Automation appliance and verify the SSL Certificate.
    1. Type the user name, which is root, and the password.

      The password is the password that you specified when you deployed the vRealize Automation appliance.

    2. Select Accept Certificate.
    3. Click View Certificate.

      Compare the certificate thumbprint with the thumbprint set for the vRealize Automation appliance. You can view the vRealize Automation appliance certificate in the client browser when the management console is accessed on port 5480.

  5. Click Next.
  6. Select Custom Install on the Installation Type page.
  7. Select Distributed Execution Managers under Component Selection on the Installation Type page.
  8. Accept the root install location or click Change and select an installation path.

    Even in a distributed deployment, you might sometimes install more than one IaaS component on the same Windows server.

    If you install more than one IaaS component, always install them to the same path.

  9. Click Next.
  10. Check prerequisites and click Next.
  11. Enter the log in credentials under which the service will run.

    The service account must have local administrator privileges and be the domain account that you have been using throughout IaaS installation. The service account has privileges on each distributed IaaS server and must not be a local system account.

  12. Click Next.
  13. Select the installation type from the DEM role drop-down menu.




    The Worker executes workflows.


    The Orchestrator oversees DEM worker activities, including scheduling and preprocessing workflows, and monitors DEM worker online status.

  14. Enter a unique name that identifies this DEM in the DEM name text box.

    If you plan to use the migration tool, this name must exactly match the name you used in your vCloud Automation Center 5.2.3 installation. The name cannot include spaces and cannot exceed 128 characters. If you enter a previously used name, the following message appears: "DEM name already exists. To enter a different name for this DEM, click Yes. If you are restoring or reinstalling a DEM with the same name, click No."

  15. (Optional) Enter a description of this instance in DEM description.
  16. Enter the host names and ports in the Manager Service Host name and Model Manager Web Service Host name text boxes.



    With a load balancer

    Enter the fully qualified domain name and port number of the load balancers for the Manager Service component and the Web server that hosts Model Manager, and

    Do not enter IP addresses.

    Without a load balancer

    Enter the fully qualified domain name and port number of the machine where you installed the Manager Service component and the Web server that hosts Model Manager, and

    Do not enter IP addresses.

    The default port is 443.

  17. (Optional) Click Test to test the connections to the Manager Service and Model Manager Web Service.
  18. Click Add.
  19. Click Next.
  20. Click Install.
  21. When the installation finishes, deselect Guide me through the initial configuration and click Next.
  22. Click Finish.

What to do next

  • Verify that the service is running and that the log shows no errors. The service name is VMware DEM Role - Name where role is Orchestrator or Worker. The log location is Install Location\Distributed Execution Manager\Name\Logs.

  • Repeat this procedure to install additional DEM instances.