Radhya Sahal*

Faculty of Computer Science and Engineering, Hodeidah University, Al Hudaydah, Yemen

*Corresponding Author: Radhya Sahal, Faculty of Computer Science and Engineering, Hodeidah University, Al Hudaydah, Yemen.

Received: January 12, 2022; Published: March 03, 2022

Virtualization technology overview

Virtualization technology is not new. It is used in the past in the 70's as a solution to minimize cost and utilize resources for the huge infrastructure in mainframe computers [1-3]. In the 80's, expensive mainframes replaced minicomputers with low costs, so the virtualization technology disappeared in this period. In the last decade, virtualization technology is returned as a solution for some challenges facing networking technologies and data centres [4]. These challenges are security, availability, reliability, cost, space, and power consumption. Virtualization supports the server consolidation approach, which uses a set of provisioned VMs into a minimum number of physical servers to optimize resources and minimize the number of physical servers [5-7]. The consolidated servers are easier management and cheaper in terms of enormous infrastructure space and power consumption. Also, if any failure has happened in the virtual machine (VM), it will not affect other VMs. Moreover, the performance of any VM is not affected by the performance of other VMs. In addition, it is easier to migrate and protect VMs if there is any failure takes place [1].

Keywords: Virtualization; Virtual Machine; Full Virtualization and Para-virtualization; Xen