6.2

Table Of Contents
What to do next
To ensure that the Manager Service you installed is a passive backup instance, verify that the
vRealize Automation Service is not running and set it to "Manual" startup type.
A system administrator can change the authentication method used to access the SQL database during
run time (after the installation is complete). See Configuring Windows Service to Access the IaaS
Database.
Installing Distributed Execution Managers
You install the Distributed Execution Manager as one of two roles: DEM Orchestrator or DEM Worker. You
must install at least one DEM instance for each role, and you can install additional DEM instances to
support failover and high-availability.
The system administrator must choose installation machines that meet predefined system requirements.
The DEM Orchestrator and the Worker can reside on the same machine.
As you plan to install Distributed Execution Managers, keep in mind the following considerations:
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DEM Orchestrators support active-active high availability. Typically, you install one DEM Orchestrator
on each Manager Service machine.
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Install the Orchestrator on a machine with strong network connectivity to the Model Manager host.
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Install a second DEM Orchestrator on a different machine for failover.
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Typically, you install DEM Workers on the IaaS Manager Service server or on a separate server. The
server must have network connectivity to the Model Manager host.
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You can install additional DEM instances for redundancy and scalability, including multiple instances
on the same machine.
There are specific requirements for the DEM installation that depend on the endpoints you use. See
Distributed Execution Manager Requirements.
Install the Distributed Execution Managers
A system administrator installs at least one DEM Worker and one DEM Orchestrator. The installation
procedure is the same for both roles.
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.
Prerequisites
Download the IaaS Installer.
Procedure
1 Right-click the setup__vra-va-hostname.domain.name@5480.exe setup file and select Run as
administrator.
Installation and Configuration
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