The main benefit of server virtualization is enhanced compute efficiency. Virtualization allows multiple virtual servers to run on one physical server, better utilizing resources and significantly increasing efficiency. This leads to better compute efficiency as hardware utilization is maximized. The other options either do not directly relate to the core benefits of server virtualization or are secondary benefits. For example, enhanced data availability and automatic OS updates can be achieved through other means and are not exclusive to server virtualization.

The Dell EMC Hyper-Converged system that provides a VMware private cloud solution, enabling Infrastructure as a Service (IaaS) and Platform as a Service (PaaS), is the VxRack SDDC. This system is specifically designed to support scalable and efficient VMware private cloud deployments, delivering the key capabilities necessary for building and managing such environments.

Dell EMC Hyper-Converged solutions typically utilize direct-attached storage. This type of storage is integral to hyper-converged infrastructure as it combines compute and storage resources into a single system, leveraging software to manage these resources cohesively. Blade servers, unified switching, and XtremIO Flash Storage are components that are either more commonly associated with traditional or converged infrastructures rather than hyper-converged systems.

The purpose of configuration management is to control the lifecycle of all changes. It involves establishing and maintaining consistency of a product's performance, functional, and physical attributes with its requirements, design, and operational information throughout its lifecycle.

The feature of the Cisco UCS compute platform in a Dell EMC VxBlock system that helps to provide application high availability is the presence of redundant components. These redundant components ensure there is no single point of failure, thus maintaining high availability and reliability of the system.