Summary of the concepts of stand-alone server, VPS, cloud server and virtual host

Today, the editor shares a summary of the concepts of stand-alone servers, VPS, cloud servers and virtual hosts. Recently, many people have asked me about these concepts, so I'm going to write an article to summarize them! Let's look down together.

Understand Iaas, PaaS, and SaaS before you know the server

IaaS provides basic server resources, PaaS provides an environment in which your program code can be run, and SaaS provides specific application functions and data storage services.

1. Standalone server

A stand-alone server, as its name implies, is a real physical server lying in the computer room, which can also be understood as your game console.

Advantages: high performance

Disadvantages: high price, low high availability (such as power outage, broken hard drive …... )

2.VPS

Virtual Private Server virtual private server generally virtualizes an independent server into multiple virtual private servers through virtualization technology.

Advantages: low price

Disadvantages: low performance and low high availability (in addition to the physical machine where it is located, it will be affected, and virtualization technology will also be affected if there is a problem)

3. Cloud Virtual Machine (ECS)

Elastic Compute Service, referred to as ECS, many people understand that a cloud server is the same as a VPS, and some even say that the previous VPS is now a cloud server, but in fact, a cloud server is a combination of computing, network and storage. To put it simply, through a number of

4.CPU

A combination of memory, hard disk computing pool and storage pool and network.

Advantages: moderate price, flexible use, high availability (single or multiple physical offline will not have much impact on the entire service)

Disadvantages: relatively low performance

5. Virtual host (Vhost)

Virtual hosts (Vhost) virtual host is built through physical server, VPS or CVM installation panels such as CPanel,Plesk. The virtual host market is chaotic, and the prices of different manufacturers are generally very different. Generally speaking, the quality of a virtual host can be seen from the following points: Cloud

Linux

It is more suitable for multi-tenant virtual hosts. CPanel,Plesk panels are the most popular in the market. Generally speaking, the price is relatively expensive. It is best to use a CVM (for example), or a physical server. Generally, VPS is not selected as the server for the virtual host.

Advantages: low price and easy to use

Disadvantages: generally speaking, you can only do websites or application back-end servers, and it is difficult to choose and purchase in a cluttered market.

Summary

If it is used normally, it will not be taken into consideration. It is too expensive. Virtual hosts can only be used to build stations, and the scope of application is relatively small, so VPS and ECS are generally considered when buying servers. There are many VPS in foreign countries, but the cloud services of many large domestic companies provide ECS, for example. VPS has high performance-to-price ratio, but the corresponding water is also very deep. Therefore, if it is recommended to buy a virtual host only for use as a station, to build ladders, build websites, and hang scripts, VPS is recommended.

Note:

1. In terms of price: stand-alone server > cloud service > VPS > virtual host

two。 In terms of user maintenance costs: virtual hosts

After reading the appeal, do you have a general understanding of the concepts of stand-alone server, VPS, cloud server and virtual host? If you want to know more, welcome to follow the industry information channel.