What is one feature provided by vSphere that helps prevent performance bottlenecks?

The ability of vSphere to provide Storage DRS for load balancing and resource management is a key feature that helps prevent performance bottlenecks. Storage DRS, or Storage Distributed Resource Scheduler, automates the management and optimization of storage resources.

This feature integrates storage I/O load balancing with data placement, allowing vSphere to monitor the performance and capacity of datastores. When workloads fluctuate, Storage DRS can automatically move virtual machine disk files to the most optimal datastore. This ensures that no single datastore experiences excessive load while others remain underutilized. As a result, performance is optimized, and the risk of bottlenecks due to storage contention is significantly reduced.

In contrast to other options, features like manual migration of virtual machines or periodic shutdown of idle virtual machines do not offer the same level of automation and proactive management that Storage DRS delivers. They may help alleviate performance issues, but they do not systematically ensure balanced resource utilization across storage environments in the same effective manner.