我们在什么情况下会用到虚拟机(虚拟机什么情况下会用)

Virtual machines are generally tools used when testing software and viruses. They are isolated from the real machine and are the safest. Shadow systems are easier to use and safer. Many people use anti-virus + shadow systems. As long as the combination is not specifically excluded, it will be restored when the machine is restarted; sandboxes are used a lot, are very convenient, and have good security. When the configuration is not very high, you can use it to test virus behavior; in addition, users with mysophobia generally also like to use this kind of software

Through virtual machine software, one or more virtual computers are simulated on a physical computer. The virtual machine works like a real computer and can install operating systems and applications. programs, access network resources, etc.

An application running on your physical computer, an application running in a virtual machine, doing work on a real computer. When conducting software evaluation in a virtual machine, the system will also crash. What crashes is only the operating system on the virtual machine, not the operating system on the physical computer. The "Undo" (recovery) function of the virtual machine can immediately restore the virtual machine to before installing the software. status.

Popular virtual machine software includes VMware (VMWareACE) and VirtualPC, which can virtualize multiple computers on Windows systems and install other operating systems such as Linux, OS/2, and FreeBSD. Microsoft in February 2003...Virtual machine software simulates one or more virtual computers on a physical computer. The virtual machine works exactly like a real computer.

Install operating system, install applications, access network resources, etc. An application running on your physical computer, in the case of an application running in a virtual machine, is working on a real computer.

When conducting software evaluation in a virtual machine, the system will still crash. What crashes is only the operating system on the virtual machine, not the operating system on the physical computer. Use the "Undo" (recovery) function of the virtual machine to immediately restore the virtual machine to the installation The previous state of the software. Popular virtual machine software includes VMware (VMWareACE) and VirtualPC, which can virtualize multiple computers on Windows systems and be used to install other operating systems such as Linux, OS/2, FreeBSD, etc.

After Microsoft acquired Connectix in February 2003, it released Microsoft Virtual PC 2004. Due to various considerations, the newly released VirtualPC2004 no longer explicitly supports Linux, FreeBSDNetWare, Solaris and other operating systems. It only retains OS/2. You need to virtualize a Linux computer and set it up manually. In comparison, VMware is significantly higher than VirtualPC2004 in terms of support for multiple operating systems and execution efficiency. One computer becomes two, and you no longer have to worry about learning to use Linux.

A virtual machine uses a computer to allocate multiple areas with complete computer characteristics. Each virtual area can work without affecting each other. The role of virtual machines in our lives is also relatively large. It is Used by many netizens and companies. Let me share with you what a virtual machine is and what its uses are.
What is a virtual machine?
Virtual machine refers to a complete computer system with complete hardware system functions simulated by software and running in a completely isolated environment. Currently, popular virtual machine software includes VMware, VirtualBox and VirtualPC, all of which can run on Windows systems. Multiple computers are virtualized on the computer. Each virtual computer can run independently and can install various software and applications.
In fact, a virtual machine is to virtualize a computer so that one computer can have the functions of multiple computers. However, the performance of the entire machine will also be allocated and divided by each virtual machine. Therefore, the more virtual machines are divided, the Each virtual machine is allocated fewer CPU, memory, and storage space resources. Therefore, the higher the configuration, the better when setting up a virtual machine. Therefore, it is widely used in server and other industries.
What is the use of virtual machines?
The role of virtual machines in daily life and work is still quite large. For example, in the simplest case, our computer does not have a CD-ROM drive. If we want to install a system, we can use a virtual machine to install the system. The virtual machine has a virtual CD-ROM drive inside. It supports directly opening the system image file to install the system. In addition, virtual machine technology is also very practical in the eyes of game enthusiasts. For example, we know that many games on a computer generally do not support multiple openings at the same time, but we can create several more virtual machines on the computer. , then the program can be run separately in the virtual machine system, so that one computer can open multiple games at the same time. In addition, virtual machines have many functions, such as virus analysis and so on.
In fact, virtual machines are also widely used in enterprises. Since servers usually have very high configurations, many server network providers usually divide one server into multiple virtual machine servers in order to meet the needs of small and medium-sized webmasters. , so that each website can be allocated a portion of independent server resources without affecting each other and can be assigned an independent IP address, which greatly solves the problem of high costs for small and medium-sized enterprises to use independent servers. Currently, all VPS servers purchased use this technology. I believe that webmasters know the uses of virtual machines.