Configure a split domain when you use Metadata Manager and want to be able to upgrade Metadata Manager without upgrading other components in your product bundle.
For example, your product bundle includes PowerCenter, Metadata Manager, and Informatica Analyst (Analyst tool). You use PowerCenter for data integration. You use Metadata Manager for metadata extraction and data lineage. You use the Analyst tool to create and maintain business glossaries.
The following image shows the configuration for each domain:
In this configuration, all data integration operations are performed in the primary domain. The PowerCenter services in the secondary domain support the Metadata Manager workflows that extract metadata and load it into the Metadata Manager repository. You cannot use the PowerCenter services in the secondary domain for data integration. The Analyst Service, Data Integration Service, and Model Repository Service in the secondary domain support business glossary creation and maintenance. You cannot use these services for data integration.