Points to Consider before installing Virtual Machine (VM):.In addition to that, some of the main features of virtualization make it more advantageous.īefore moving ahead with the pros and cons of virtualization, let ‘s get an idea about points to be considered before configuring a virtual machine and how to configure it. Virtualization surely makes life easier by allowing the deployment of multiple Virtual Machines (VMs) on a single physical machine. And this is where virtualization comes into picture. But what happens when you have to test different versions and distros and are expected to work on 50 machines (with different configurations) on daily basis?Ĭreating, maintaining, and monitoring the huge test environment is a tedious task and time-consuming too. ![]() Looking at the scenario, initially, when only two Operating Systems were supported, it was easier to create a test environment using multiple physical machines. Also, a long-term plan is to develop the same application for the windows platform too. After the first primary release and looking at the demand of the application, management decides to expand support for other distros of Linux like Ubuntu, Fedora, and Mint. On one physical machine, only one Operating System can be installed.Ĭonsider an example: Initially, as per the test plan, the application needs to be tested for RHEL 6.1 and SLES 11.2. How Virtualization technique is advantageous for testers: Recommended Reading => VirtualBox Vs VMWare All these virtualization solutions can be installed on your local desktop machine or laptop. To list down a few of them: VMware Player, Sun Virtual Box, Oracle VM manager, Microsoft Virtual PC, etc. In today’s world, many virtualization solutions are available which could be used by users as freeware. Using this technique, the guest is very well aware of its environment as the paravirtualized OS is altered to be alert about its virtualization ![]() Thus, this method runs modified versions of operating systems. Paravirtualization: This virtualization technique is a kind of enhancement of virtualization technology, where OS to be installed as guest OS is reconfigured before installation inside the virtual machine.This method is easy to implement and provides a useful and robust virtualized environment. The key factor for partial virtualization is address space virtualization, where each virtual machine consists of independent address space. Partial Virtualization: This method simulates the underlying hardware configuration for the virtual machines being created.The technique enables the administrators to run unchanged and entirely virtualized operating systems. Full virtualization allows the flexibility to combine existing systems with the newer ones with increased efficiency and well-organized hardware. Full Virtualization: Full virtualization helps in virtualizing the main physical server so that different applications and software can be supported.Under Hardware/Platform virtualization, three types of virtualization are included: ![]() In simple words, on single physical hardware, when single or multiple virtual computer environments can be created and each of them can be used as an independent computer, it’s called platform virtualization. Every scope of virtualization has its own specification.įor this article, we are concentrating on Hardware Virtualization, the most basic and most needed virtualization technique in the software testing field.Ĭomputer hardware virtualization is the virtualization of computers or operating systems. With growing technology and demand, virtualization technology has been expanded from Hardware and Software virtualization to Memory virtualization, Storage virtualization, Data virtualization, and Network virtualization.
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