Virtualization- Which Type do We Want_ Let Us have a Look!
Virtualization refers to the creation of virtual rather than actual versions of things such as operating systems, hardware devices, servers, network resources etc. Virtualization lets you to utilize your resources efficiently and eliminates the hardware dependency. Virtualization is done mainly when you want to create such a system that requires huge resources, which cannot be possibly provided in reality so we have to virtualize such a system. Based upon the working and architecture, virtualization can be divided mainly into seven categories. In the article below, we will be explaining the detailed working of these seven types of virtualization and we will try to compare them by showing the pros and cons of each type.
Types of Virtualization:
➢ Operating System Virtualization:
In this type of virtualization, we put another instance of an operating system on the same machine, which already has a preinstalled operating system. This is done to create two or more different work environments within the same machine. For example, we can install Ubuntu on a machine, which already has Windows 7 installed on it. Then at the boot up time, we will need to specify which operating system we want to use.
● Pros of OS Virtualization:
It provides high level of performance and highest density of virtual environment.
● Cons of OS Virtualization:
If the host OS crashes, all the guest OS will be rendered useless.
➢ Server Virtualization:
In this type of virtualization, each application sees its own logical server, which is independent of the actual physical servers. Server virtualization can be further divided into the following two types: Bare Metal Virtualization and Hosted Virtualization.
● Pros of Server Virtualization:
It provides a speedy backup and recovery.
● Cons of Server Virtualization:
It is very expensive.
➢ Application Virtualization:
In this type of virtualization, applications run in such a way as if they are running on the hardware drive but actually, they run on a different server.
● Pros of Application Virtualization:
It provides efficient resource utilization.
● Cons of Application Virtualization:
Not all types of applications can be virtualized.
➢ Administrative Virtualization:
It is that type of virtualization, which is mainly used in data centers. In this type, administrative access to certain management resources can be given to different people or a group of people.
● Pros of Administrative Virtualization:
It provides flexibility.
● Cons of Administrative Virtualization:
It introduces security and safety issues.
➢ Network Virtualization:
In this type of virtualization, hardware and software network resources are combined together and they work as a single entity.
● Pros of Network Virtualization:
It improves operational simplicity.
● Cons of Network Virtualization:
Its design complexity is very high.
➢ Hardware Virtualization:
In this type of virtualization, we use extra virtual instances of hardware resources on the same machine, which already has its own dedicated set of hardware resources. This is done to create a large pool of hardware resources that can be made available on demand.
● Pros of Hardware Virtualization:
It provides ease of maintenance.
● Cons of Hardware Virtualization:
Not all the processors are designed to support hardware virtualization.
➢ Storage Virtualization:
In this type of virtualization, we have a set of servers that are managed centrally by a virtual storage system.
● Pros of Storage Virtualization:
It provides ease of management.
● Cons of Storage Virtualization:
It has a single point of failure.
StarWind Hyper-converged Appliance:
StarWind HyperConverged Appliance is a software based hyper-converged platform, which is used to minimize application downtime. All the hyper convergence activities are monitored and managed on one single console.
The main features of StarWind HyperConverged Appliance are listed below:
● Data Locality
● StarWind web based management
● Scale up and Scale out
● Unified storage
● Fault tolerance and high availability
● Server side cache
● Commodity hardware
This appliance comes in the following three models: All flash model, hybrid model and disk model.
As the trend of using virtualization is increasing day by day, it is becoming necessary for every IT expert to have a basic understanding of different types of virtualization. Once you know these types, you can choose to virtualize any of your resources right according to your need.