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However, I think there are many people who say, ``I've heard about virtual servers, but I don't fully understand what they are.'' Therefore, this time, we will explain the basics of virtual servers, their advantages and disadvantages, and how to build them. Basically, one OS is installed and used on each server. In order to withstand high-load applications, the servers are equipped with a certain amount of extra resources such as CPU, memory, and storage. There are many purposes for preparing a server, but it is rare to constantly operate under such a high load that it uses all of the server's resources.
Even if you have multiple excellent physical servers, there are cases where the CPU utilization rate is only a little on all of them. "Virtual servers" were created to make effective use of the remaining resources of unused physical servers. In other words, a virtual Special Data server refers to multiple virtual servers built within a server using the server's remaining resources. This allows you to run multiple OSs on a single server, allowing each to be used independently for different purposes. What is the difference between virtual server and physical server? A virtualized server is called a "virtual server," while a server built on physical hardware is generally called a "physical server.
" The differences can be summarized in an easy-to-understand manner as follows. Physical server: A server that owns "hardware resources" such as CPU, memory, and storage. Virtual server: Virtual “server software” that uses physical server hardware In other words, the major difference between virtual servers and physical servers is whether they have physical hardware resources. Techniques used for server virtualization There are two main methods used for server virtualization. Method 1. Host OS type Source: GMO Cloud Host OS type refers to a method of building a virtual server by installing virtualization software on a physical server on which an OS such as Windows or Linux is installed.
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发表于 2024-3-3 14:20:52