Which of the following features is NOT part of virtualization?

The correct answer is data redundancy, as it is not a fundamental feature of virtualization. Virtualization primarily focuses on the abstraction of hardware resources to create virtual instances, allowing multiple environments to run on a single physical machine.

Partitioning refers to the division of physical resources into separate virtual entities. For instance, a single server can be partitioned to host multiple virtual machines, effectively utilizing the available hardware.

Isolation is another key feature of virtualization, ensuring that each virtual machine operates independently from others. This isolation guarantees that processes in one virtual environment do not interfere with those in another, increasing security and stability across applications.

Encapsulation involves wrapping the virtual machine's configuration, state, and associated files in a single package. This allows for easier management, deployment, and mobility of virtual machines, as users can move or copy them seamlessly from one environment to another.

In contrast, data redundancy pertains to the duplication of data to ensure reliability and availability, which is more related to data management and storage strategies rather than a direct attribute of virtualization technology itself.