7.3

Table Of Contents
The embedded instance of vRealize Orchestrator is now recommended. In older deployments or
special cases, however, users might connect vRealize Automation to an external
vRealize Orchestrator instead.
n
The appliance contains the downloadable Management Agent installer. All Windows servers that
make up your vRealize Automation IaaS must install the Management Agent.
The Management Agent registers IaaS Windows servers with the vRealize Automation appliance,
automates the installation and management of IaaS components, and collects support and telemetry
information.
Infrastructure as a Service
vRealize Automation IaaS consists of one or more Windows servers that work together to model and
provision systems in private, public, or hybrid cloud infrastructures.
You install vRealize Automation IaaS components on one or more virtual or physical Windows servers.
After installation, IaaS operations appear under the Infrastructure tab in the product interface.
IaaS consists of the following components, which can be installed together or separately, depending on
deployment size.
Web Server
The IaaS Web server provides infrastructure administration and service authoring to the
vRealize Automation product interface. The Web server component communicates with the Manager
Service, which provides updates from the Distributed Execution Manager (DEM), SQL Server database,
and agents.
Model Manager
vRealize Automation uses models to facilitate integration with external systems and databases. The
models implement business logic used by the DEM.
The Model Manager provides services and utilities for persisting, versioning, securing, and distributing
model elements. Model Manager is hosted on one of the IaaS Web servers and communicates with
DEMs, the SQL Server database, and the product interface Web site.
Manager Service
The Manager Service is a Windows service that coordinates communication between IaaS DEMs, the
SQL Server database, agents, and SMTP. In addition, the Manager Service communicates with the Web
server through the Model Manager and must be run under a domain account with local administrator
privileges on all IaaS Windows servers.
Unless you enable automatic Manager Service failover, IaaS requires that only one Windows machine
actively run the Manager Service at a time. For backup or high availability, you may deploy additional
Manager Service machines, but the manual failover approach requires that backup machines have the
service stopped and configured to start manually.
For more information, see About Automatic Manager Service Failover.
Installing vRealize Automation
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