Which scenario is applicable for extent migrations?

The scenario that applies to extent migrations involves the source and target volumes having identical capacities. Extent migration is typically employed in storage environments where data needs to be moved from one volume to another while maintaining the same size and allocation of the data. This ensures that the data structure and distribution remain intact, minimizing disruption to the workloads and applications relying on that data.

In situations where the capacities of the source and target volumes differ, extent migrations would not be applicable, as the method is inherently designed to handle volumes that are of equivalent size. By having identical capacities, the operation can be carried out efficiently without the need for resizing the volumes or altering the amount of data being managed. This makes extent migrations a suitable choice when the goal is to relocate data without significantly impacting performance or availability.