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The content of this article mainly focuses on how to compare the CVM with the vps. The content of the article is clear and clear. It is very suitable for beginners to learn and is worth reading. Interested friends can follow the editor to read together. I hope you can get something through this article!

Many people confuse vps with the cloud host, thinking that the vps is the cloud host and the cloud host is the vps. In fact, there is an essential difference between the two. Many people talk about cloud computing, talking about what cloud computing is, may be more and more vague. Let's talk about the comparison between CVM and vps, and maybe you will understand what "cloud" is.

VPS:Virtual Private Server (Virtual Private Server) is the use of virtual server software (such as VMware, xen) to create multiple small servers isolated from each other on a physical server. These small servers (VPS) have their own operating system, and their operation and management are exactly the same as those of stand-alone servers.

CVM: CVM is an IT infrastructure capacity leasing service that integrates computing, storage and network resources, and can provide server leasing services based on cloud computing model for on-demand use and on-demand payment. A CVM is a virtual part of a CVM that is similar to an independent host on a cluster composed of several servers. it has the characteristics of high reliability and flexibility.

Vps has something in common with CVMs: both are virtualized spaces on physical servers, and their operation and management are exactly the same as stand-alone servers.

Vps differs from a CVM in:

1. Differences in architectural patterns

You can also see the difference in the above introduction of vps and CVM. Vps just creates multiple small servers isolated from each other on a single physical server, which is not difficult to understand. To put it simply, it is the same concept that you install a vmware and build a lot of virtual machines in it.

On the other hand, the cloud host is not that simple. If you classify vps as a stand-alone version, the CVM will be completely distributed.

A CVM is a part that virtualizes multiple independent hosts on a cluster composed of several servers. For example, Aliyun's own Feitian distributed system can support 5,000 server clusters. The creation of a CVM is scheduled through a distributed system, rather than simply creating a virtual machine on a physical machine. It is precisely because of the scheduling of this distributed system that there is an essential difference between the CVM and the vps. It is precisely because of the scheduling of this distributed system, the CVM has the advantage that vps cannot surpass.

2. Different storage modes

The CVM uses distributed cluster storage, and multiple copies of data are written in real time, so there is no single point of failure. When the physical machine where the service is located is down, it is automatically migrated to redundant data backups. While vps only uses stand-alone local disk storage (that is, a physical machine), only one copy of the data is written. Eggs are only in one basket, and the risk of machine failure and data loss will always exist.

3. The difference of reliability

When the computing node machine has a sudden hardware failure, the CVM supports automatic reconstruction to other nodes, which only takes about 5 to 10 minutes, all of which are automatically scheduled by the distributed system. VPS can take hours to wait for hardware repairs.

In terms of storage, the storage node damages one or two servers without any impact, and the system automatically directs data reads and writes to other nodes. While VPS is local storage, once the local hard disk or array is damaged, it will be interrupted for several hours, or data loss may occur.

4. Differences in functions and services

As mentioned earlier, the essential difference between a CVM and vps is that the creation and management of the underlying resources are scheduled by a distributed system. It is precisely because of the scheduling of this distributed system that the CVM has the unsurpassed advantage of vps. What is "cloud" is actually the integration of traditional IDC underlying resources into a service that users take on demand, which is the so-called cloud.

Usually, after purchasing a CVM, some features and services are available to users free of charge, which cannot be surpassed by vps:

A. The CVM has the feature of image packaging, which can package the CVM system into an image. If combined with api, it will only happen in an instant to create thousands of CVMs.

B. Don't worry about the monitoring of the CVM. Cloud Monitoring will help you. The status information of the server can be seen at a glance in the console. Malfunction alarm will be sent to your mobile phone or mailbox automatically. Mom doesn't worry about the tedious surveillance anymore.

C, the security of the server, do not worry, the underlying layer of the CVM is the deployment of hardware firewall. For example, there is no need to worry about attacks like ddos. You can even manually set some parameters such as the traffic threshold for the attack.

Thank you for your reading. I believe you have a certain understanding of "how to compare a CVM with vps". Go ahead and practice it. If you want to know more about it, you can follow the website! The editor will continue to bring you better articles!

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