- In hardware-assisted virtualisation, the hardware provides architectural support, including support for the construction of virtual machine monitors and support for guest operating systems to run independently.
- Hardware virtualisation means that the hardware physical platform itself provides support for the interception and redirection of special instructions.
With the continuous development of information technology, cloud computing has become one of the core concepts in the modern computing field.
Hardware virtualisation concept
Hardware virtualisation is a key technology in cloud computing, which allows multiple operating systems and applications to run simultaneously on the same physical server without interfering with each other. This technique is achieved by creating virtual machines (VMs), each with its own independent operating system and application environment.
Hardware virtualisation refers to the virtual computer or operating system into a complete hardware platform, some logic of its components is abstracted and then presented, you can virtual a hardware that does not exist in the physical machine. Hardware virtualisation technology does not show the user the real physical characteristics of the computer platform, but only presents an abstract computing platform with the functions required to run various operating systems.
Two types of hardware that support virtualisation
Intel Virtualisation Technology (INtel-VT): INtel-VT is a technology introduced by Intel to address the reliability, security, and performance shortcomings of software-only virtualisation solutions. It allows one CPU to work as if multiple cpus were running in parallel, making it possible to run multiple operating systems in a computer at the same time.
AMD Virtualsation (Amd-v): Amd-v is a virtualisation technology from AMD. It is a set of hardware extensions and hardware-assisted virtualisation technologies for the x86 processor system architecture that can simplify software-only virtualisation solutions, improve the design of Virtual Machine Monitor (VMIM), make better use of hardware resources, and improve the virtualisation efficiency of servers and data centers.
Also read: The importance of server virtualisation in modern IT infrastructure
Advantages of hardware virtualisation
Improved resource utilisation: Virtualisation allows you to use server hardware resources more efficiently.
Enhanced flexibility: New virtual machines can be quickly deployed to adapt to changing business requirements.
Cost savings: Reduced need for physical hardware and reduced maintenance and operating costs.
Isolation: Each VM is independent, and a problem with one VM does not affect other VMS.
Portability: VMS can be migrated between different physical servers.
Also read: What is server virtualisation and why do we use it?
