What must be done if InTouch and Historian are on different nodes?

When InTouch and Historian are operating on different nodes, sharing the application directory is crucial for ensuring that both systems can access the necessary components and data seamlessly. By sharing the application directory, you allow InTouch on one node to reference the configuration and data files stored on the Historian node. This setup is particularly important for maintaining the integrity and synchronization of data collected and utilized by both applications.

This approach removes the need for installing the same software on both nodes, as they can interact using a shared library. It also avoids the complexity and resource overhead of using a virtual server unless there's a specific requirement for virtualized environments. Additionally, connecting through a VPN is more relevant for secure communications across different networks rather than facilitating direct access between applications like InTouch and Historian that need to reference shared resources.

By sharing the application directory, you enhance operational efficiency and ensure consistent data availability across both platforms. This is particularly important in industrial processes where real-time data access and collaboration between systems are vital for optimal performance.