VIRTUALIZATION

VIRTUALIZATION

Virtualization is the process of creating virtual versions of physical components. It reduces IT expenses and boosts the liveliness. It enables multiple operating systems and applications to be run on a single server and consolidates hardware. It provides an abstraction layer for physical storage resources to be managed optimized in a virtualization deployment. This increases mobility of applications and allows migration to any server in the environment with minimal downtown.  

Benefits of Virtualization

• Reduce capital and operating costs.
• Minimize or eliminate downtime.
• Increase IT productivity, efficiency, agility and responsiveness.
• Provision applications and resources faster.
• Enable business continuity and disaster recovery.
• Simplify data center management.
• Build a true Software-Defined Data Center

   

Server Virtualization:

Using server virtualization, multiple operating systems can run on a single physical server as virtual machines, each with access to the underlying server’s computing resources. Each VM in the host is unaware of the other VMS that exist within the same host.

Network Virtualization:

Network virtualization is the process of combining hardware and software network resources and network functionality into a single, software-based administrative entity, a virtual network. Network Virtualization is the complete reproduction of a physical network as software.

Storage Virtualization:

Storage virtualization is the pooling of physical storage from multiple network storage devices into what appears to be a single storage device that is managed from a central console. It provides an abstraction layer for physical storage resources to be managed optimized in a virtualization deployment.

Application virtualization:

Application virtualization is software technology that encapsulates computer programs from the underlying operating system on which it is executed. It increases mobility of applications and allows migration to any server in the environment with minimal downtown.

Desktop Virtualization:

Desktop virtualization is software technology that separates the desktop environment and associated application software from the physical client device that is used to access it. Virtualized desktops applications help reduce costs and increase service.

Virtual Machine

A virtual machine (VM) is an operating system or application environment that is installed on software, which imitates dedicated hardware. The end user has the same experience on a virtual machine as they would have on dedicated hardware.

Benefits of Virtual Machines

·         Multiple applications on each host

·         Maximum host utilization, Minimum host count

·         Faster and easier provisioning of applications and resources 

Hypervisor

Hypervisor provides the virtual hardware and physical resources on which you can create virtual machines. 

There are two types of hypervisors.

Bare-Metal (Type 1 or native):  These are installed on a physical device without an operating system. They perform the functions of the operating systems and have resource management capabilities.

Hosted (Type 2): They operate as an application on top of a pre-existing operating system.

Difference between virtualization and cloud computing

• Virtualization is a technology that separates functions from hardware
• Cloud computing is more of a solution that relies on that split

ie, virtualization is software that manipulates hardware, while cloud computing refers to a service that results from that manipulation. Virtualization is a foundational element of cloud computing and helps deliver on the value of cloud computing.