VMware Certified Professional - Data Center Virtualization (VCP-DCV) Practice Exam

In a DRS configuration, what happens when a conflict arises between two VM-VM affinity rules?

1. The conflict must be manually resolved.

2. The older rule takes precedence.

3. Affinity rules are ignored in conflicts.

4. The newer rule disables the older one.

The correct answer is: The older rule takes precedence.

In a Distributed Resource Scheduler (DRS) configuration, when a conflict arises between two VM-VM affinity rules, the principle that governs their behavior is that the system typically honors the older rule and allows it to take precedence. This is important for maintaining stability in resource management and ensures coherence within the environment, as it avoids sudden changes that could disrupt existing workloads that rely on the established affinity setup. The reasoning behind this precedence is rooted in the idea that established configurations are generally best for preserving user-defined intentions and operational consistency. Therefore, the newer rule would not automatically override the older one, which could otherwise lead to unpredictable resource allocation and potential performance issues. It’s crucial for system administrators to be aware of and manage these configurations actively, as conflicts can occur, highlighting the importance of careful planning and monitoring of affinity rules to avoid any service interruptions or resource contention dilemmas.