Which technology allows for minimal downtime during VM migration?

The correct choice is vMotion, which is a critical technology in VMware vSphere that enables the live migration of running virtual machines (VMs) from one physical server to another without any noticeable downtime for the users. This capability is essential for workload balancing, server maintenance, and minimizing service interruptions, as it allows administrators to move VMs seamlessly while they remain operational.

vMotion operates by transferring the active memory and state of the VM across the network to the destination host, which is done in a way that ensures the VM remains available and responsive throughout the process. Once the migration is nearly complete, the VM's network identity is transferred, and the VM is switched over to the new host with little to no service disruption.

The other options, while related to managing resources and availability in a virtualized environment, do not specifically provide the same uninterrupted VM migration capability that vMotion does. VMware High Availability (HA) focuses on restarting VMs on available hosts in case of hardware failure, which may not be instantaneous and does not facilitate live migrations. VMware DRS (Distributed Resource Scheduler) automates the placement and migration of VMs based on resource utilization, but it relies on vMotion to perform the actual migration. The vSphere Client is a management