Disadvantages of ECS (host)

The transmission of digital services is inseparable from computer resources such as CPU, memory, memory and network connection If you plan to choose ECs, you need to do some homework in advance There are obviously many advantages of cloud server or cloud computer, such as reducing costs, allowing enterprises to focus on core business, etc But as with any thing, the cloud server also has defects Here are six major disadvantages: 1 Downtime or downtime is one of the biggest disadvantages of the cloud server Even the best virtual machine providers are not immune to downtime The cloud computer system is based on the Internet, which means that your access completely depends on the Internet connection As with any computer hardware, any reason may cause the ECs to shut down Therefore, before selecting the virtual machine, the following points should be considered: the cloud computer provider is required to commit at least 99.55% of the normal operation time, which is equivalent to no more than 1.83 days of downtime in a year or 3.6 hours per month 2 Security and privacy when it comes to data, it naturally involves security and privacy, especially when dealing with sensitive data This is also one of the biggest risk disadvantages of virtual machine Despite the commitment of cloud server providers, no system can guarantee 100% security All you can do is weigh the risk factors carefully 3 Vulnerable in the cloud, any component can access from the Internet Of course, you can ensure security without connecting to the Internet However, since the cloud server is based on public services, some measures must be taken to ensure security 4 Limited control and flexibility ECS users have certain restrictions on the function and execution control of host devices Although this is not an issue, it should be taken into account 5 The implicit dependency (also called vendor lock-in) of cloud computing platform is another disadvantage of cloud server Deep rooted differences in vendor systems sometimes prevent you from migrating to another cloud platform Reconfiguration of applications to meet the needs of new hosts is not only complex, but also expensive In addition, migration adds additional data and privacy insecurity 6 Cloud computing platform costs small-scale and short-term projects using cloud servers are actually very expensive While it will allow you to reduce staff and hardware costs, the overall cost will be higher than expected Therefore, unless you are sure that it is the best choice, there are many products to test, such as Amazon's AWS and Google's GCP Although the cloud server has these shortcomings, with the continuous maturity of the platform, the continuous decline of cost and price, and the improvement of completeness and reliability, more and more enterprises and users choose the virtual machine.