Hyper-V, Most Powerful Virtualization Technology
All virtualization technologies during the past were designed to be installed and run as an application on top of a standard operating system. As in Microsoft’s Windows Server 2003, the virtualization software running on the host OS, sharing the physical server’s processor, RAM and disk between a number of virtual machines. This enabled a particular guest to have a dedicated Hard Disk Space, dedicated RAM and a dedicated IP address, but in reality, they were still operating on a single OS.
However, with the introduction of hypervisor, it all changed. It removed the necessity of having a host OS to run the virtualization software, hence provided true hardware virtualization and isolation from all the other virtual machines on the physical dedicated server. In simple words this means that a hypervisor can be installed into a bare server. And Hyper-V is the Microsoft’s virtualization technology used on windows VPS.
Advantages of Hyper-V
The first and most important advantage of this approach is that it enhances the performance of the host by enabling be optimized for the sole purpose of running a virtual machine. An ordinary OS on a server machine had to carry out number of other tasks in addition to looking after the guest virtual machines, like file sharing, taking care of other hosting services, printer sharing and running other applications. However, since a host powered with Hyper-V technology is optimized for only running virtual machines, it enables more VMs to be hosted on the same hardware while also improving the level of performance.
Moreover, Windows hypervisor technology , is more secure than the previous hosting platforms since a standard host OS has a higher number of vulnerabilities when compared to a hypervisor code. And since the technology enables true hardware virtualization, it’s next to impossible for a virus or some other malicious software to attack another VM on the same server while being active on another VM.
Cost reduction can also be pointed as another possible benefit, since you don’t have to license a host OS before setting up the virtual machines. In reality, this only applies to windows VPS hosting, and even in that situation, it is not considered as a major concern.
Although there are some disadvantages in hypervisors like being far more hardware specific than hosted virtualization products, it is generally been accepted as a good thing among the hosting communities.BACK TO ARTICLES