Virtual Machines

Virtual Machines

1. Computers with CPU, Memory and storage stored as a bit of code on a physical server.

2. They can be set up on a desktop PC, on a server or in the cloud.

3. They can be used to help distribute the workload of a physical server. In the picture above, one physical server could have the capability of 4 servers with the help of three virtual machines as well.

4. Uses:

   • Virus use. According to Microsoft Azure VM's can: " safely study computer viruses, isolating the viruses to avoid risking their host computer."
   • They can be used to run beta versions of software, to emulate how the program will run on a physical device, without the risk of crashing a physical device if there are bugs or errors in the code.
   • Extremely beneficial for software development, as these environments can be created really easily and reduces the amount of physical servers in an area, which has good environmental benefits too.

5. Examples

   • JavaScript engine: interprets and executes JavaScript code, which with the help of a web layout engine can be loaded as a proper website.

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