In the todays world, Virtualization technologies has dramatically transformed how companies run their IT infrastructure. If we look at history, Virtualization is a fairly old technology and its origin can be traced back from the 1960s when it was first developed by IBM to allow access to the mainframes of computers[refer to virtualization book]. Due to its immense benefits in the cost-saving, resources utilization and ease of management today this technology is being adopted in the wider range of companies and is growing at the rapid rate. This technology has been a driving force behind the cloud computing.
In essence, Virtualisation in computing can often be defined as the use of the hardware of the single physical machine to run many virtual machines within it.
Virtualization technology enables us to share the physical computing resources among the virtual machines. Normally, the operating system (OS) of the machine controls and manages the hardware resources of the computer but with the virtualization technology, it adds a new layer between the OS and the hardware called hypervisor or virtual machine monitor (VMM). This layer makes it possible to virtually share the physical resources from the physical device and allocate it to the virtual machines. There are two different types of hypervisors: Type 1 hypervisors and Type 2 hypervisors. Due to the fact that Type 1 hypervisors are installed on top of the physical servers, they are also called bare-metal hypervisors. Examples include VMware esxi and Microsoft Hyper-V. Type 2 hypervisors has a layer of physical OS between the physical host and the hypervisor so they are also called hosted hypervisors. They are generally used for end user virtualization. Examples include Oracle Virtualbox and VMware workstation.
Identify the benefits and risks of implementing virtualisation at targeted points within the infrastructure.
There are several virtualization platforms, some of the most common hypervisors include KVM, Xen, VMware, vSphere, Microsoft Hyper-V and so on. KVM and Xen are open- source hypervisors whereas VMware, vSphere and Microsoft Hyper-V are commercial hypervisors i.e. license needs to be purchased to use these technologies. Although the purpose of these platforms are same but their difference in the underlying technologies, performance, features and costs makes them ideal for various diasporas of industries. The choice of different virtualization platforms does not only apply to enterprise’s private data centre. In fact, popular cloud virtualization platforms such as Microsoft Azure utilises Hyper-v, Amazon EC2 uses Xen, Google cloud uses KVM and VMware partner uses ESX. Recently VMware has partnered with AWS for all VMware vSphere-based workloads. This types of diversity of hypervisors various challenges due to different underlying technologies and its security risks but at the same time promises new opportunities to explore and leverage the advantage.
Covid-19 pandemic has initiated a sudden and dramatic digital transformation across the world. This has forced most of the companies to adjust their working styles i.e. remote working and invest more on their IT infrastructure. This paper compares the three virtualization technologies against the VMware and discusses the
To conduct is report we have configured one blade server with four popular hypervisors i.e. VMware ESXi, hyper-v, KVM and Xen. We have then created an identical Ubuntu VM and allocated each with 1 virtual CPU and 2 GB of RAM. This environment will be used to conduct the performance comparision between the four hypervisors and understand the relative strengths and weakness of them.
Explain Hyper V :
Hyper V is a hypervisor that is installed on the windows server as additional service. It provides the isolation of
ESXI and Hyper- v comparision:
critical analysis of different virtualisation technologies available and critically compare these technologies with VMware
give your recommendations on whether VMware based virtualisation is the right way forward or an alternative technology would be better