Given three physical servers and one virtual server, which node should be virtualized if physical servers have 32 GB of RAM and the virtual server has 8 GB?

The choice of virtualizing the Proxy node in a Qlik Sense environment, given the hardware specifications, is well-founded. The Proxy node's primary role is to handle requests from users and manage connections, which typically requires less memory compared to other nodes like the Engine, Repository, or Scheduler.

The Engine node, responsible for data processing and analysis, demands significant resources, particularly RAM, to handle complex calculations and analytics efficiently. Similarly, the Repository node is essential for managing app data and configuration, thereby requiring robust resources to ensure data integrity and availability. The Scheduler node is tasked with managing tasks and distribution across the platform, which can also be resource-intensive.

In this context, the virtual server, equipped with only 8 GB of RAM, is better suited for the less demanding Proxy role. Virtualizing this node allows the more resource-heavy components to run on the physical servers with 32 GB of RAM, which can handle heavier workloads and ensure optimal performance across the entire system. This strategic allocation maximizes the effectiveness of the available resources while adhering to the physical and operational limitations posed by memory constraints on the virtual server.