Using the what-if tool, you can plan for an increase in workload or capacity requirements in your virtual infrastructure. To evaluate the demand and supply for capacity on your system objects, and to assess the potential risk to your current capacity, you can create scenarios for adding workloads. You can also determine how much capacity you need to make a migration work.
Why Create a Scenario
A scenario is a detailed estimation of the resources you must have available in your environment to incorporate upcoming changes. You define scenarios that can potentially add resources to actual data centers. vRealize Operations Manager models the scenario and calculates whether your desired workload can fit in the targeted data center. You can save multiple scenarios for comparison or later review.