What are the different types of server virtualization? Learn from the experts
Server virtualization enables multiple operating systems to run on a single physical server, helping businesses increase efficiency, reduce hardware costs, and simplify maintenance. However, with so many different types of server virtualization available, it can be challenging to determine which is the best fit for your organization. Therefore, this article will explore the most popular types of server virtualization.
- Full virtualization allows multiple virtual servers to run on a single physical server. Hypervisor software is necessary to achieve this. The hypervisor acts as a middle layer between the physical and virtual servers. It manages the physical server’s resources, including disk space and CPU usage, and distributes them as required among the virtual servers. Another benefit of hypervisors is that they enable efficient resource sharing across various operating systems.
This feature helps optimize computing power. However, hypervisors require a dedicated amount of server resources to operate, limiting overall server power. In addition, with full virtualization, the separate instances do not need to be aware of each other, helping to improve the overall security and reliability of the virtual environment.
- Para-virtualization enables multiple operating systems to run on a single physical server. The main difference between full and para-virtualization is that in para-virtualization, each OS on the server is aware of the presence of other operating systems. This allows virtual servers to communicate and enable an entire network of servers to work together to manage resources more efficiently.
The primary advantage of para-virtualization is that it requires fewer resources to operate compared to full-virtualization. This is because the virtual servers are aware of each other and can share physical resources more efficiently, making it a cost-effective solution for businesses.
- OS-level virtualization is the simplest form of server virtualization that can be implemented and maintained with fewer resources than other virtualization methods. In OS-level virtualization, there is no need for a hypervisor; instead, the physical server’s operating system manages resources and separates virtual machines. However, it comes with some limitations.
One limitation of OS-level virtualization is that each virtual machine must run the same operating system as the host because the host operating system is acting as a hypervisor. However, despite its limitations, OS-level virtualization offers many benefits, such as improved resource utilization, reduced hardware costs, and easier maintenance.
Categories Of Server Virtualization
- In addition to three major types of server virtualization, more specific categories that define virtualization are discussed below:
- Application virtualization is a managed service that uses virtualization to host and implement specific applications or software. This method allows for the installation and updates of software without the need to take down the entire operating system.
It is a popular choice for businesses as it offers a quick and affordable way to implement new software. In addition, updates can be installed safely, and multiple versions of the same software can be run simultaneously.
- Security virtualization protects networks by using security software on virtual machines. This approach offers flexibility and scalability as security is not tied to a specific device. It is typically hosted in the cloud and managed by a third party. In addition, it enables services and functions to move quickly between virtual and physical machines within a network.
This can be particularly useful for businesses with rapidly changing environments, where security needs fluctuate depending on various factors. Moreover, it can accommodate network size and traffic changes by adding or removing virtual machines as needed, making it one of the most affordable security solutions.
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