Foreword:
With the continuous popularization of enterprises, Internet servers are also constantly being updated. In recent years, from traditional server rental, server hosting, virtual hosting, to the current vps hosting, independent servers, and cloud servers are gradually moving closer to users. For users, you may not be able to distinguish or understand the difference between vps host, independent server and cloud server. The following article will analyze the difference between vps host, independent server and cloud server for you, so as to avoid being fooled when purchasing a server .
What is vps host, dedicated server, cloud server?
(1) vps host: the abbreviation of English Virtual Private Server, translated as "virtual private server" at noon, it is virtual server software to create multiple independent small servers on a physical server. These small servers have their own independent operating system, which is run and managed exactly like a standalone server. It is to open a part of the independent server for you. The operation rights and methods are the same as those of the independent server, but the configuration and performance are limited (multiple vps can be opened on one server, depending on the settings of the space provider). To put it bluntly, vps is multiple users. Share the hardware of a server.
(2) Independent server: It is a single physical server on which only your own content runs, and you own the software and hardware of this server; 
(3) Cloud server: It can also be called a cloud host, which integrates computing, IT infrastructure capacity rental services for storage and network resources, on-demand use and paid server rental services based on cloud computing models. A cloud server is a cluster composed of multiple servers, and multiple parts similar to independent servers are virtualized on this cluster, which has the characteristics of high reliability and flexibility. It is divided into multiple parts similar to independent hosts on a group of clustered physical servers. Each server in the cluster will have an image of the cloud host. When one of the machines has a hardware failure, the system will automatically access other machines. The image backup on the server improves the stability and security of the cloud host. It is actually a virtual server with the same functions and usage methods as the server, with independent IP and bandwidth. Users can install various operating systems and Configure various website operating environments.
The cloud server is to virtualize several parts similar to independent servers on a group of cluster servers. Each server in the cluster has a mirror image of the cloud server, which greatly improves the security and stability of the virtual server. If all the servers have problems, the cloud server cannot be accessed. Cloud server is a web-based service that provides elastic cloud technology that can adjust the configuration of cloud hosts, Iaas services that integrate computing, storage and network resources, and cloud host rental services that can be used on-demand and on-demand on-demand. The flexibility, controllability, scalability and resource reuse have been greatly improved. 
In fact, cloud server is an upgraded product of VPS. The difference between the two is mainly in the following aspects:
1. Infrastructure: The performance of VPS is limited by the physical server where it is located. If there is a problem with the physical server, the VPS will also have problems, and the website will be affected. The cloud server is built on a cluster server, and a problem with one server will not affect the normal operation of the cloud server.
2. Upgrade method: The cloud server is virtualized and exists in the network, so the upgrade is very convenient, such as upgrading the hard disk, bandwidth, CPU and other configurations, and it can be automatically completed within a few minutes online. Due to the limitation of the host computer, VPS has limited upgrade ability and takes longer time.
3. Support for mirroring and intranet: The cloud server natively supports intranet transmission, and the speed is extremely fast, which is conducive to load balancing, and can also quickly clone multiple system mirrors. Due to the difference in architecture, VPS is difficult to support intranet, and does not support custom mirroring.
4. Storage mode: The cloud server is divided by cluster servers. It adopts network distributed storage, and the data can be kept in multiple copies in real time. Even if the data is damaged, it will not affect the normal operation of the server. The VPS only stores one copy of the data on the hard disk of the local physical server, and if it is damaged, it will not work properly.
5. Reliability: The cloud server is supported by multiple servers, which can achieve hotspot migration and automatic switching of faulty nodes. When the computing node fails, the cloud server can automatically switch to other nodes, and the reliability is quite high. When upgrading or restarting, the website can be guaranteed to function normally. However, VPS is limited by a single server. When the server needs to be upgraded or restarted, it needs to be interrupted. After the server is restored, it can continue to run, which delays time. When the computing node fails, the VPS can only be interrupted, which may also cause data damage. . 
What is the difference between VPS, cloud server and dedicated server:
1. If the VPS is compared to a faucet, the computing and storage resources of the server are a water pipe, and there are many faucets on the water pipe. You need to pay to rent this faucet, and its water flow is limited. If you want to get more water flow then you need to rent more faucets and at the same time if all the faucets are running then the water flow will be lower for each faucet.
2. With the host (cloud server) under cloud computing, what you get is a faucet that can have large or small traffic, and one server becomes a group, just like a water pipe becomes a large water pipe composed of many water pipes. When you need more water flow, you can directly control your faucet to increase the water flow, and even if all the water pipes are running water, it will not affect your water flow. What's more, the cost you need to pay is no longer generated by renting water pipes, but for the flow of water you need.
3. As for setting up or renting the entire server by yourself, it is far less economical at present, because you have to buy the faucet and water pipe, and you have to buy it when it is not enough. We all know that server resources are usually used at 20%. Unless the business is very stable and will not grow significantly, you can consider self-build.
(1) Cost of ownership
Dedicated server: usually paid quarterly or annually, if it is server hosting, you need to purchase the server and related hardware independently, and the cost is high;
Cloud server: low comprehensive cost, no deposit for monthly payment, on-demand use, and on-demand payment;
(2) Operating system
Independent server: independent operating system, choose the appropriate operating system according to the needs of the enterprise;
vps host: choose the appropriate operating system according to the needs of the enterprise;
Cloud server: independent operating system, you can freely choose the appropriate operating system;
(3) Scalability
Independent server: If the server is hosted, you need to add configuration to the hosting server. During the configuration, the server cannot work normally; if the server is rented, you need to re-rent the server and pay for the original server resources.
Cloud server: high scalability, instant supply, on-demand expansion;
(4) Supply and deployment time
Dedicated server: days to weeks;
vps host: more time, instant;
Cloud server: Instant, a few minutes to complete the installation of the operating system, enabling one-click deployment.
(5) Performance and guarantee
Dedicated server: good performance and guaranteed;
vps host: poor performance, generally used with small-scale concurrent access, poor performance guarantee, vulnerable to other vps in the same server;
Cloud server: The performance is good and guaranteed, and the performance is equivalent to the physical server of the same level;
(6) Safety and reliability
Independent server: high performance, commonly used server hosting and server rental. Users have exclusive server resources, so they are less affected by other sites, and can configure defense software according to website requirements.
VPS host: general security and reliability, affected by other sites in the same server, when one of the sites is attacked, it will have a certain impact on other sites in the server.
Cloud server: high security and reliability, cloud server is a cluster of multiple servers, exclusive hardware, exclusive resources, and shared tolerance. Therefore, reliability is high.
(7) Failure recovery
Independent server: it needs to be repaired before it can be restored. For server rental, it is repaired by the staff on duty in the computer room; for server hosting, it is repaired by professional technicians or contracted personnel of the enterprise.
vps host: When the physical server where the vps host is located fails, all vps hosts in the unified service period cannot run.
Cloud server: The recovery is fast, the cloud server is error-prone, the operating system and software environment can be backed up, and there is no need to reconfigure the software environment after recovery.
The above is the explanation of the difference between independent server, vps host and cloud server. Whether users choose a dedicated server, vps host or cloud server for website construction can be selected according to the needs of the enterprise. For example, if the enterprise is small and personal website, etc., you can choose vps host; if the enterprise is a portal website, mall website, and has special requirements for security and stability, you can choose a dedicated server or cloud server. If you want to know more, please log on http://www.idcnuo.com/ please contact QQ: 228460192