How does vSphere DRS improve resource utilization in a cluster?

vSphere Distributed Resource Scheduler (DRS) improves resource utilization in a cluster primarily through continuous analysis and optimization of virtual machine (VM) performance. By intelligently balancing workloads across ESXi hosts within a cluster, DRS ensures that resources are allocated where they are most needed, thus preventing scenarios where some hosts are over-utilized while others are under-utilized.

Additionally, DRS relies on shared storage access, allowing VMs to be easily migrated between hosts without downtime or disruption to operations. This capability means that resource demands can be met more effectively, as VMs can be relocated to balance the load across the cluster, enhancing the overall utilization of resources.

While limiting VM redundancy is a design consideration in resource management, it does not directly relate to the optimization of resource utilization in the same manner as the processes facilitated by DRS. Therefore, DRS's true strengths lie in its ability to continuously optimize VM performance and enable shared storage access, which together contribute to more effective resource utilization across the cluster.