Shulou(Shulou.com)06/02 Report--

We all know that cloud computing has the feature of elastic expansion, which means that the available resources in the cloud can change flexibly and rise and fall freely according to the needs of users, and can match the right amount of resources during peak or trough periods of business. neither stretched nor wasted. Elastic cloud server, to put it simply, refers to a virtual server running in a cloud computing environment, which supports users to schedule computing resources freely and is not limited by traditional hardware devices.

Elastic CVM has good scalability, which allows users to flexibly adjust the memory, system disk and bandwidth of the server online at any time. With the cost advantage of cluster deployment, it greatly reduces the cost of IT deployment and business operation and maintenance. As the service is scattered in multiple hosts or even multiple computer rooms, it is not easy to completely downtime, has strong disaster resistance and fault tolerance, can ensure long-term online, and makes the website run more safely and reliably.

Generally speaking, the "flexibility" of CVM is mainly reflected in the flexibility of resource invocation, billing method, and business management.

Elasticity of resource invocation the "elasticity" here is that compared with traditional servers, it is difficult for users to change the configuration of a single server in the traditional IT environment. Usually, the purchased server will remain the same all the time, and the configuration of the server will not change during the 3-5 year depreciation period. However, after purchasing a CVM, customers can adjust and change the server configuration in time with the increase or decrease of business volume, which cannot be achieved by traditional IDC.

The flexibility of billing method for small and medium-sized enterprises, most of them are faced with problems such as shortage of technical personnel and limited operating costs. if they continue to buy / lease a large number of server resources, it will not only cause the operation and maintenance to keep up, but also leave more resources idle. When you buy a CVM, you only pay for the resources you need (network, server, storage, application software, services, etc.), which improves the efficiency of resource utilization, avoids unnecessary waste and optimizes operating costs.

The flexibility of business management is to calmly cope with the "peak" and "trough" of traffic, and the CVM must also have the ability of temporary flexibility and free scaling. For example, during the Singles' Day, New year's Day and anniversary celebrations, there will often be a surge in user access, but in normal times, the server configuration is fully sufficient, and if you don't want to buy too much and waste, you can temporarily upgrade the server on a daily basis to expand CPU, memory or network bandwidth until you successfully pass the peak access period.

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