What is a Virtual Machine?

A virtual machine is a tightly isolated software container that can run its own operating systems and applications as if it were a physical computer. A virtual machine behaves exactly like a physical computer and contains it own virtual (ie, software-based) CPU, RAM hard disk and network interface card (NIC).

An operating system can’t tell the difference between a virtual machine and a physical machine, nor can applications or other computers on a network. Even the virtual machine thinks it is a “real” computer. Nevertheless, a virtual machine is composed entirely of software and contains no hardware components whatsoever. As a result, virtual machines offer a number of distinct advantages over physical hardware


Do you know anything about Virtual Machine Lets Share Thought


I have lot to teach and if you are interested let me know then we share thought

What many do not know is that the future of computing is here an its in the cloud and Virtualization.

more to come if you show your interest on here

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Please go on with the training. i have it installed but stuck in someways. this is really a good development. keep it up.

How Does Virtualization Work?

The VMware virtualization platform is built on a business-ready architecture. Use software such as VMware vSphere to transform or “virtualize” the hardware resources of an x86-based computer—including the CPU, RAM, hard disk and network controller—to create a fully functional virtual machine that can run its own operating system and applications just like a “real” computer. Each virtual machine contains a complete system, eliminating potential conflicts. VMware virtualization works by inserting a thin layer of software directly on the computer hardware or on a host operating system. This contains a virtual machine monitor or “hypervisor” that allocates hardware resources dynamically and transparently. Multiple operating systems run concurrently on a single physical computer and share hardware resources with each other. By encapsulating an entire machine, including CPU, memory, operating system, and network devices, a virtual machine is completely compatible with all standard x86 operating systems, applications, and device drivers. You can safely run several operating systems and applications at the same time on a single computer, with each having access to the resources it needs when it needs them.

Build your Datacenter on a Flexible Architecture

Virtualizing a single physical computer is just the beginning. You can build an entire virtual infrastructure, scaling across hundreds of interconnected physical computers and storage devices with VMware vSphere, a proven virtualization platform used as the foundation for building private and public clouds. You don’t need to assign servers, storage, or network bandwidth permanently to each application. Instead, your hardware resources are dynamically allocated when and where they’re needed within your private cloud. Your highest priority applications always have the necessary resources without wasting money on excess hardware only used at peak times. Connect this private cloud to a public cloud to create a hybrid cloud, giving your business the flexibility, availability and scalability it needs to thrive.

Manage your Resources with the Lowest TCO

It’s not just virtualization that’s important. You need the management tools to run those machines and the ability to run the wide selection of applications and infrastructure services your business depends on. VMware lets you increase service availability while eliminating error-prone manual tasks. IT operations are more efficient and effective with VMware virtualization. Your staff will handle double or triple the number of servers, giving users access to the services they need while retaining centralized control. Deliver built-in availability, security, and performance across the board, from the desktop to the datacenter.

Good training. Its getting very interesting!

What is a Virtual Machine?
A virtual machine is a tightly isolated software container that can run its own operating systems and applications as if it were a physical computer. A virtual machine behaves exactly like a physical computer and contains it own virtual (ie, software-based) CPU, RAM hard disk and network interface card (NIC).

An operating system can’t tell the difference between a virtual machine and a physical machine, nor can applications or other computers on a network. Even the virtual machine thinks it is a “real” computer. Nevertheless, a virtual machine is composed entirely of software and contains no hardware components whatsoever. As a result, virtual machines offer a number of distinct advantages over physical hardware.
Virtual Machines Benefits
In general, VMware virtual machines possess four key characteristics that benefit the user:

    Compatibility: Virtual machines are compatible with all standard x86 computers
    Isolation: Virtual machines are isolated from each other as if physically separated
    Encapsulation: Virtual machines encapsulate a complete computing environment
    Hardware independence: Virtual machines run independently of underlying hardware

Compatibility

Just like a physical computer, a virtual machine hosts its own guest operating system and applications, and has all the components found in a physical computer (motherboard, VGA card, network card controller, etc). As a result, virtual machines are completely compatible with all standard x86 operating systems, applications and device drivers, so you can use a virtual machine to run all the same software that you would run on a physical x86 computer.
Isolation

While virtual machines can share the physical resources of a single computer, they remain completely isolated from each other as if they were separate physical machines. If, for example, there are four virtual machines on a single physical server and one of the virtual machines crashes, the other three virtual machines remain available. Isolation is an important reason why the availability and security of applications running in a virtual environment is far superior to applications running in a traditional, non-virtualized system.
Encapsulation

A virtual machine is essentially a software container that bundles or “encapsulates” a complete set of virtual hardware resources, as well as an operating system and all its applications, inside a software package. Encapsulation makes virtual machines incredibly portable and easy to manage. For example, you can move and copy a virtual machine from one location to another just like any other software file, or save a virtual machine on any standard data storage medium, from a pocket-sized USB flash memory card to an enterprise storage area networks (SANs).
Hardware Independence

Virtual machines are completely independent from their underlying physical hardware. For example, you can configure a virtual machine with virtual components (eg, CPU, network card, SCSI controller) that are completely different from the physical components that are present on the underlying hardware. Virtual machines on the same physical server can even run different kinds of operating systems (Windows, Linux, etc).

When coupled with the properties of encapsulation and compatibility, hardware independence gives you the freedom to move a virtual machine from one type of x86 computer to another without making any changes to the device drivers, operating system, or applications. Hardware independence also means that you can run a heterogeneous mixture of operating systems and applications on a single physical computer.
Use Virtual Machines as the Building Blocks of your Virtual Infrastructure

Virtual machines are a fundamental building block of a much larger solution: the virtual infrastructure. While a virtual machine represents the hardware resources of an entire computer, a virtual infrastructure represents the interconnected hardware resources of an entire IT infrastructure—including computers, network devices and shared storage resources. Organizations of all sizes use VMware solutions to build virtual server and desktop infrastructures that improve the availability, security and manageability of mission-critical applications


If you have any Question please ask and I hope I will not be Ban again for talk to you on this forum about Virtualization

Before we go into talking about the Virtual Infrastructure

I have been posting on here but each time I get this

Sorry deliceshop, you've lost your forum posting privileges.

Reason: You have been auto-banned by the antispam bot. You may be unbanned shortly.
Please DO NOT REPOST: your post is still here, just hidden. So sorry!

can the moderator of this forum do some thing so that I can continue to share with others

Thank you in anticipation

Virtual machines allow you to run an operating system in an app window on your desktop that behaves like a full, separate computer. You can use them to play around with different operating systems, run software your main operating system can’t, and try out apps in a safe, sandboxed environment.

https://www.novabach.com/how-to-create-and-use-virtual-machines/