Private cloud is also a type of cloud computing. It has the common advantage of cloud computing, mainly including super expansion and self -service. We usually talk about cloud servers and cloud hosts. Generally, public clouds, private clouds are higher than public clouds. Generally, large and medium -sized enterprises are the first choice. Private cloud data is safer than public cloud data, and data maintenance is relatively good.

　　1. Three types of cloud computing infrastructure

　　There are three general cloud deployment models: public clouds, private clouds and mixed clouds. Public cloud refers to an independent third -party supplier that has computing resources that customers can access through the Internet. Public cloud users share these resources, which is a model called multi -tenant environment.

　　In contrast, private clouds are created and maintained by individual enterprises. Private clouds may be based on the company's local data center or new independent infrastructure that exist in resources and infrastructure. In these two cases, companies themselves have private clouds.

　　Mixed cloud is a model connected to the infrastructure of private cloud and public cloud, allowing enterprises to arrange workloads in two environments. In this model, the public cloud effectively becomes an extension of a private cloud and forms a unified cloud. The deployment of mixed clouds requires high degree of compatibility between the underlying software and services used by public cloud and private cloud.

　　Second, the advantages of private cloud

　　When enterprises correctly build and implement private clouds, it can provide most of the advantages in public clouds, such as user self -service and scalability, as well as the capabilities of configuration and configuration of virtual machines (VM), and changes to optimize computing resources on demand. Enterprises can also implement billing tools to track the use of use and ensure that the business department only pays the resources or services they use.

　　Private clouds are usually deployed when public clouds are not suitable for business needs. For example, public clouds may not be able to provide the service availability or normal operation time of the enterprise. Under other circumstances, the risk of the key type of the task of custody tasks in the public cloud may exceed the risk tolerance of the enterprise, or there may be security or management issues related to the use of multi -tenant environment. In this case, enterprises may choose to invest in private clouds to realize the advantages of cloud computing while maintaining complete control and ownership of their environment.

　　Third, the disadvantages of private clouds

　　However, there are some shortcomings in private clouds. First, private cloud technology such as automation and user self -service will bring some complexity to enterprises. These technologies usually require the IT team to re -build some of its data center infrastructure and use other management tools. As a result, an enterprise may need to adjust or even increase the IT operation and maintenance employees to successfully implement the private cloud. Unlike the public cloud, most of the underlying complexity is processed by cloud providers.