Detailed explanation of the top ten misunderstandings of cloud computing

Cloud computing is neither grid computing nor virtualization, but an end-to-end solution that is integrated with multiple products and services. Cloud computing is SaaS? Cloud computing is only suitable for small and medium enterprises? Cloud computing can not guarantee the security of enterprise data? What is cloud computing? There are still many misunderstandings in cloud computing.

Misreading 1. Cloud computing is grid computing

Grid technology is an integral part of cloud computing. How to provide resources to a work task is the main difference between them (grid and cloud). Grid computing is concerned with moving a work task to what it needs, generally a remote and already available resource. Usually, a grid is a group of servers, and a large computing task can be split into multiple small tasks that are assigned to these servers to run in parallel. Grid computing is mainly used in education and research institutions, but less in enterprises.

We can think of cloud computing as a phase upgrade of previous generation computing models (such as grid computing, transparent computing, utility computing). We can also define cloud computing in this way: Cloud computing is a computing model in which applications, data, and IT resources are made available to users over the network in a serviced manner. Cloud computing is also a methodology for infrastructure management. A large number of computing resources form an IT resource pool for dynamically creating highly virtualized resources for users to use. In a cloud computing environment, all computing resources, such as servers, can be dynamically generated from the hardware infrastructure and modified to suit the needs of the task. Therefore, cloud computing can support grid computing as well as non-grid computing, such as a three-tier architecture application or Web 2.0 application.

Misunderstanding 2. Implementing cloud computing requires abandoning legacy IT infrastructure resources

The essence of cloud computing is to maximize the utilization of IT investments through consolidation, sharing, and dynamic provisioning, including new investments and existing resources. Therefore, implementing cloud computing does not require abandoning legacy IT infrastructure resources. The implementation of cloud computing systems can leverage existing IT infrastructure resources, and cloud computing systems can efficiently monitor and manage existing and new IT infrastructure resources.

Misunderstanding 3. Cloud computing is only suitable for SMEs

SMBs can get great benefits from cloud computing because cloud computing allows them to lease resources from cloud providers without spending huge amounts of money and IT technology to maintain such an infrastructure. Cloud computing can help these SMBs incubate their innovations in the cloud and shorten the time it takes their products to go to market. In this model, we will deploy some public cloud like Wuxi cloud computing center to provide this shared service and resources.

At the same time, the cloud has another application model in the enterprise environment. We call it a private cloud model. The enterprise builds its own cloud computing infrastructure and provides cloud computing services to internal users or external customers. Enterprises have the autonomy of infrastructure and can improve services based on their own needs and carry out independent innovation.

Misreading 4, cloud computing is a technology or product

The most complete and complete requirement for cloud computing customers should be an end-to-end solution that is integrated with multiple products and services. The realization of the cloud computing concept integrates these technologies into a series of solutions to help customers manage their IT environment more efficiently by means of various technologies such as virtualization, automation, and Web 2.0.

Misreading 5, cloud computing is SaaS

Focusing only on software as a service (SaaS) is to see only one piece of the cloud. The ultimate goal of the cloud is IT as a Service (ITaaS). Of course, SaaS can benefit from the rapid deployment and resource expansion provided by the cloud, so that applications on SaaS can scale well in both the number of users and the rapid deployment.

Misreading 6, cloud computing is virtualization

Virtualization is an integral part of the cloud. Cloud is more advanced than virtualization. The cloud can directly deploy the customized IT environment for the end user on the virtual machine. Cloud computing integrates existing technologies for virtualization, grid computing, and utility computing and builds clouds based on it.

Misreading 7. Cloud computing needs to keep corporate data in public places, and cannot guarantee the security of enterprise data.

This depends on how the company stores their data. Some public clouds do not meet all the needs of the enterprise. However, they can share mail, photos and videos, or some other personal application service. For businesses, storing data on a standardized and standardized cloud ensures the secure and efficient use of their data.

Misunderstanding 8. The financial crisis will reduce IT investment budget and affect the realization of cloud computing.

According to IDC's analysis, the trend of adopting cloud technology will be strengthened due to the financial crisis originating from the United States. From an economic point of view, the cloud is very attractive to businesses: the cloud can help save up to 80% of the area used, 60% of power and cooling consumption, up to three times the utilization of facilities, making it Some resources are more efficient.

In the economic downturn, cloud computing will become a competitive advantage. Through analysis, Gartner is convinced that in five years, most data centers will spend the same amount of energy on hardware. The energy crisis will drive big companies to transform their data centers to become more efficient. In addition, government incentives and shared responsibility for “green” have prompted them to do so.

Misreading 9, cloud computing technology is not mature, can not land

Cloud computing is not a rhetoric. Government departments and companies, such as the Wuxi government and iTricity in Europe, have been able to get cloud computing into their production environment with the help of IBM and pass on the convenience of cloud computing to their customers.

However, to make the benefits of cloud computing a reality and reduce risk, I would recommend that my customers adopt the 80/20 approach, which is to transfer 80% of their business to the cloud, which should be from dynamic resource management. Benefit from this while retaining 20% ​​of critical business in a proprietary private environment.

Misreading 10, the world only needs a big cloud

A public cloud is not enough for business or individual users. Public clouds are provided to end users by third parties and are generally free or inexpensive and can be used over the Internet. There are now many types of clouds that serve end users through a public, open network. Business users are concerned about the security, privacy, compliance and standardization of this common model. While this model saves you the cost of buying and maintaining a data center, companies are more willing to choose a private cloud to keep data safe.

Moreover, in addition to the general services, each cloud in order to provide the best quality of service to end users, cloud computing should be customizable. User groups can define special services and applications based on their own characteristics.

2009 is a good time to implement cloud computing, as the various technologies required have taken shape and the market needs large-scale scalable IT resources.

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