What issue does vSphere vMotion help resolve without VM downtime?

vSphere vMotion is a powerful feature that allows for the live migration of virtual machines (VMs) from one physical host to another without experiencing any downtime. When considering the context of the question, the key issue that vMotion addresses is the ability to perform upgrades or maintenance on a vSphere cluster while keeping VMs operational.

When upgrading a vSphere cluster, it is often necessary to take hosts offline one at a time to perform the update. However, with vMotion, VMs can be seamlessly migrated to other hosts in the cluster. This process ensures that the VMs continue to run, maintaining availability and minimizing disruption to users or applications. This capability is integral for scenarios such as upgrading the hardware or software of hosts within a cluster, where maintaining continuous operations is crucial.

In contrast, the other options focus on problems or situations that are not directly addressed by vMotion. For instance, addressing issues that arise specifically from VM patching or mismatched file names does not require the live migration capabilities of vMotion. Similarly, while vMotion can alleviate certain performance issues by moving VMs away from overloaded datastores, the primary focus is on the migration process itself rather than directly mitigating storage traffic or latency issues in real-time. Thus, option