An Overview Of Virtualization Technology

Virtualization is the process of creating a software-based, or virtual, representation of something, such as virtual applications, servers, storage and networks. It is the single most effective way to reduce IT expenses while boosting efficiency and agility for all size businesses.

Types of Virtualization

Server Virtualization

server virtualization enables multiple operating systems to run on a single physical server as highly efficient virtual machines. Key benefits include:

  • Greater IT efficiencies
  • Reduced operating costs
  • Faster workload deployment
  • Increased application performance
  • Higher server availability
  • Eliminated server sprawl and complexity

Network Virtualization

By completely reproducing a physical network, network virtualization allows applications to run on a virtual network as if they were running on a physical network — but with greater operational benefits and all the hardware independencies of virtualization. (Network virtualization presents logical networking devices and services — logical ports, switches, routers, firewalls, load balancers, VPNs and more — to connected workloads.)

Desktop Virtualization

Deploying desktops as a managed service enables IT organizations to respond faster to changing workplace needs and emerging opportunities. Virtualized desktops and applications can also be quickly and easily delivered to branch offices, outsourced and offshore employees, and mobile workers using iPad and Android tablets.

Virtualization vs. Cloud Computing

Although equally buzz-worthy technologies, virtualization and cloud computing are not interchangeable. Virtualization is software that makes computing environments independent of physical infrastructure, while cloud computing is a service that delivers shared computing resources (software and/or data) on demand via the Internet. As complementary solutions, organizations can begin by virtualizing their servers and then moving to cloud computing for even greater agility and self-service.

Virtual Machines Explained

A virtual computer system is known as a “virtual machine” (VM): a tightly isolated software container with an operating system and application inside. Each self-contained VM is completely independent. Putting multiple VMs on a single computer enables several operating systems and applications to run on just one physical server, or “host.”

A thin layer of software called a “hypervisor” decouples the virtual machines from the host and dynamically allocates computing resources to each each virtual machine as needed.

Key Properties of Virtual Machines

VMs have the following characteristics, which offer several benefits.

Partitioning

  • Run multiple operating systems on one physical machine.
  • Divide system resources between virtual machines.

Isolation

  • Provide fault and security isolation at the hardware level.
  • Preserve performance with advanced resource controls.

Encapsulation

  • Save the entire state of a virtual machine to files.
  • Move and copy virtual machines as easily as moving and copying files.

Hardware Independence

  • Provision or migrate any virtual machine to any physical server.

Benefits of Virtualization

Virtualization can increase IT agility, flexibility and scalability while creating significant cost savings. Greater workload mobility, increased performance and availability of resources, automated operations – they’re all benefits of virtualization that make IT simpler to manage and less costly to own and operate. Additional benefits include:

  • Reduced capital and operating costs.
  • Minimized or eliminated downtime.
  • Increased IT productivity, efficiency, agility and responsiveness.
  • Faster provisioning of applications and resources.
  • Greater business continuity and disaster recovery.
  • Simplified data center management.
  • Availability of a true Software-Defined Data

What is virtual machine and its benefits?

VMs have several advantages: They allow multiple operating systems (OS) environments to exist simultaneously on the same machine. They empower users to go beyond the limitations of hardware to achieve their end goals. Using VMs ensures application provisioning, better availability, easy maintenance and recovery

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