Siebel System Requirements and Supported Platforms > Overview of Supported Environments > Categorization of Siebel 8 Applications >

Homogeneous and Heterogeneous Server Environments

In homogeneous server environments, Siebel Gateway Name Server, Siebel Servers, and Web servers are all deployed on the same platform. In heterogeneous server environments, Siebel Gateway Name Server, Siebel Servers, and Web servers can be deployed on different supported platforms. Hardware and Network Requirements Server Environment Requirements and Supported Database Server Platforms detail the combinations of database servers, application servers, Web server, and Siebel Gateway Name Server that can be deployed. If specific Siebel Server Components require a specific operating system, these components are listed in Heterogeneous Component Dependencies.

Mixed versions of the same platform are also supported. For example, IBM AIX 4.3.3 is supported with Siebel eBusiness Application version 7.0.4.0 or higher, and IBM AIX 5L is supported with Siebel eBusiness Application version 7.0.4.200 or higher. It is possible to run IBM AIX 4.3.3 on one Siebel Server with Siebel eBusiness Application version 7.0.4.200 and IBM AIX 5L on another Siebel Server, and with Siebel eBusiness Application version 7.0.4.200.