7.4

Table Of Contents
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 website.
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 runs 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.
SQL Server Database
IaaS uses a Microsoft SQL Server database to maintain information about the machines it manages, plus
its own elements and policies. Most users allow vRealize Automation to create the database during
installation. Alternatively, you may create the database separately according to your site policies.
Installing vRealize Automation
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