What is a virtual machine

Virtual machine is a software that simulates computer behavior and is completed on the host operating system. Through software simulation, virtual hardware is provided and runs in a computer in a completely isolated environment; in addition, the simulated virtual machine The computer itself is also called a virtual machine.

The operating environment of this article: Windows 7 system, DELL G3 computer.

In our lives, virtual machines are very common, so what is a virtual machine? Below, the php Chinese website will introduce you to virtual machines.

1: What is a virtual machine

A virtual machine is a software that simulates computer behavior and is completed on the host operating system. Through software simulation, it provides Virtual hardware that runs on a computer in a completely isolated environment. Additionally, the simulated virtual computer itself is also called a virtual machine.

2: Virtual machine resources

The resources of the virtual machine include several aspects, including cpu network, disk and memory. When we install the virtual machine, should be considered, otherwise, poor application performance may occur.

2: Advantages and Disadvantages of Virtual Machines

1. Advantages

Multiple virtual machines can be installed and used independently in parallel without interfering with each other, and OS and software of other architectures can be used, and it is easy to add, modify and delete individual virtual machines, integrate hardware, and balance loads. The operation is also relatively simple.

2. Disadvantages

We must consider the performance of the hardware before installation, and we must have restrictions on the activated program licenses.

Four: Linux installation virtual machine

The Linux virtual machine is a Linux operating system installed on Windows. It is actually just a file, not a real operating system. , but there is no difference between using it and actually using it, so you can perform various Linux exercises without worrying about the system crash caused by improper operation.

The above is a complete introduction to what a virtual machine is. If you want to know more about operation and maintenance, please pay attention to the PHP Chinese website.

【Recommended reading:How to install VMWare virtual machine in linux】

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