What does Storage DRS enable in vSphere?

Storage DRS (Distributed Resource Scheduler) in vSphere is specifically designed to optimize storage resources within a virtualized environment. It achieves this by automatically managing the placement and movement of virtual machines (VMs) across datastores, ensuring that workloads are evenly distributed according to predefined criteria such as space and I/O latency. This resource balancing helps prevent scenarios where one datastore is overwhelmed while another remains underutilized, enhancing overall performance and efficiency.

The functionality of Storage DRS includes features like automatic placement recommendations, migration capabilities for VMs, and space utilization monitoring. By leveraging these capabilities, administrators can maintain optimal performance and take advantage of the available storage resources effectively, maximizing the capabilities of the infrastructure.

In contrast, the other options do not properly align with the primary purpose of Storage DRS. Automated snapshot creation, increased VM power capacity, and VM cloning automation focus on different aspects of VM management rather than storage resource optimization. Thus, Storage DRS's key feature of resource balancing across datastores stands out as the correct choice.