Considerations for Installing Multiple Instances on One Computer

In a single environment you can install multiple instances of the Microsoft
Dynamics AX AOS, the application files, and the database.
You can install multiple instances of Microsoft Dynamics AX components on
separate computers, or on the same computer. AOS instances and databases
cannot be shared among instances of Microsoft Dynamics AX.
The primary use for multiple Microsoft Dynamics AX instances is in
development environments that are used to support multiple customers.

CAUTION: It is not recommended or supported installing multiple versions of
Microsoft Dynamics AX components on the same computer in a production
environment.The following table lists considerations when installing a second instance of a
component.

Component	Considerations
AOS	Each AOS instance is automatically assigned a number between 01 and 99. That number is displayed in thePrograms and Features control panel. It is recommended that you create a group in Active Directory to manage AOS account permissions.
Database	During initialization, you can import existing data into the database.

Components that require the .NET Business Connector

You can install only one instance of the .NET Business Connector on a computer. In an environment with multiple AOS instances, use the Microsoft Dynamics AX Configuration utility to make sure that the .NET Business Connector on the local computer connects to the intended AOS instance for the component you are installing. In the Configuration Target list in the utility, chooseBusiness Connector (non-interactive use only). On theConnection tab, verify that the correct AOS instance is displayed. For more information about using the Microsoft Dynamics AX Configuration utility, click the Help button in the utility.

Regards,
Hossein Karimi