Before contacting a cloud provider to order a particular service, you need to understand what type of cloud will be optimal for your company. According to the deployment model, there is the following division: public, private, and hybrid cloud. The choice of the suitable model may depend on the size of the organization, IT infrastructure, and the specifications of the data contained in the cloud storage. Let’s take a closer look at the types of clouds that cloud providers in Russia offer today.
Public Cloud:
Public Cloud provides for the placement of virtual infrastructures for several customers at once from two to an unlimited number. The data of one company is stored on a physical server along with the information of other organizations, while they are reliably protected and isolated (including from the intervention of a cloud provider).
In fact, in this case, the aggregate of the physical resources of the provider’s data center is divided into several virtual data centers, which customers of cloud services use. It is impossible to say for sure on which specific physical hardware your data will be located: when stored in a cluster, virtual machines are moved between servers to balance the load and increase fault tolerance.
Among the main advantages of a public cloud is a relatively low cost and, as a result, availability to a wide range of customers. Also, this type of deployment is flexible, convenient, and easy to interact with cloud hosting. With a stable Internet connection, virtual machines in the public cloud are easy to deploy and collapse. Computing power can be increased during peak loads and decreased as needed.
The level of data protection in the case of a public cloud is not suitable for companies with special requirements for information security – this is a noticeable disadvantage of this deployment method. However, for example, in a situation where the equipment in a company is outdated, and its replacement will require large expenses, renting a public-type cloud can be the best solution for a business.
Private Cloud:
Virtual resources are hosted on a specific physical server that is provided to one tenant. Sometimes the equipment is located in the data center next to other customers’ equipment – however, this is also a private cloud. What is important is the fact that the cloud infrastructure is dedicated to one client – even if the virtual resources are divided between the internal divisions of the organization, they are still used by one customer.
Advantages of a private cloud: complete isolation of the IT infrastructure, increased data storage reliability, and system configuration. This type of deployment is suitable for companies with complex, extensive IT infrastructure, especially if the company has special requirements for data privacy. In addition, the cloud system for accounting for resource consumption in the case of a private cloud allows you to understand how much a particular department of the organization consumes.
The disadvantages of a private cloud include its high cost and time-consuming deployment. Plus, the limited pool of resources will not allow increasing the power of cloud computing if necessary.
Hybrid Cloud:
It is a combination of both public and private clouds. It is used in cases when the customer does not have enough private cloud capacity or when the infrastructure is hosted in a private cloud, but certain tasks are more convenient to carry out in a public cloud (due to it, the costs of communications, and organization are reduced).
A hybrid cloud is the only option, even when the company has enough equipment (of high quality and in working order) but needs more resources. This leads to the movement of current infrastructure and individual services to the cloud. Also, the transfer can be made in order to ensure compliance with certain levels of security specified in federal laws on the protection of personal data.
While hybrid cloud combines some of the benefits of private and public clouds, there are drawbacks to this model. The risks of using a hybrid cloud include, for example, an increase in the threat of data loss during the transfer of data from a private cloud to a public one, as well as the inability to track where the data actually resides outside the private server.
Also Read: Computer Attacks And Distance Learning: The Deadly Combo
