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Hardware virtualization (or platform virtualization) pools computing resources across one or more virtual machines. A virtual machine implements functionality of a (physical) computer with an operating system. The software or firmware that creates a virtual machine on the host hardware is called a hypervisor or virtual machine monitor. [2]
Data virtualization is an approach to data management that allows an application to retrieve and manipulate data without requiring technical details about the data, such as how it is formatted at source, or where it is physically located, [1] and can provide a single customer view (or single view of any other entity) of the overall data.
Ultimately, virtual worlds are the place to go when real life becomes overbearing or boring. While in real life individuals hesitate to communicate their true opinions, it is easier to do so online because they do not ever have to meet the people they are talking with (Toronto, 2009). [47] Thus, virtual worlds are basically a psychological escape.
An example of a nature-oriented virtual environment made with real-time rendering engine Unity. Studies on exposure to nature environments show how they are able to help individuals relax, recover attention capacity and cognitive function, reduce stress and stimulate positive moods.
Network virtualization may be used in application development and testing to mimic real-world hardware and system software. In application performance engineering , network virtualization enables emulation of connections between applications, services, dependencies, and end users for software testing.
Other prominent examples of a simulated reality in fiction include The Truman Show (1998), in which a man realizes he is actually living in a massive television set in which actors take the role of real people, and The Thirteenth Floor (1999), a neo-noir film about a murder investigation related to a virtual reality world, in which doubts about ...
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The virtualization software or device uses the metadata to re-direct I/O requests. It will receive an incoming I/O request containing information about the location of the data in terms of the logical disk (vdisk) and translates this into a new I/O request to the physical disk location. For example, the virtualization device may :