Summary: Virtual Appliance Best Practices
Properly configuring and sizing the Virtual Appliance is important for optimal, consistent performance. CA Technologies recommends that you:
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Properly configuring and sizing the Virtual Appliance is important for optimal, consistent performance. CA Technologies recommends that you:
- Configure the Virtual Appliance based on the recommendations in this section.
- Avoid using the Distributed Resource Scheduler (DRS) for the Virtual Appliance—either globally, or through affinity and anti-affinity rules.
- Allocate 4 vCPUs and 8 GB of memory to the Virtual Appliance, and reserve both CPU and memory resources. This achieves consistently high performance from the Virtual Image.
Observe these recommendations in performance and testing environments. This guarantees consistent performance and ensures that you are testing the Virtual Appliance rather than the limitations of the virtual environment.
Many tactics used in virtual environments are undesirable for the Virtual Appliance, especially in a production environment. Such features include DRS, HA (High Availability), and limiting dedicated resources to specific images. Using any of these can result in unpredictable performance for the Virtual Appliance.