Enterprise clouds should be cautious "cloud" end also has the risk of collapse

The cloud is a metaphor for the web and the Internet. Cloud computing means getting the services you need through the network on an as-needed, extensible basis. This service can be it and software, Internet-related, but also other services. Cloud computing is designed to http://www.aliyun.com/zixun/aggregation/17453.html "> user-friendly self-service, allowing users to simply lease the computing power, storage space, or application in a network, Without investment in infrastructure, this makes computing resources cheaper, more convenient and more efficient.

There are also problems with cloud computing, the most significant of which are security issues. To liberate and optimize its own IT resources, CIOs outsource enterprise IT computing and services to cloud service providers, so they have little access to the "cloud" details of IT services. On the other hand, cloud service providers, for their own commercial confidentiality and security considerations, cannot fully present the critical information in the cloud to the CIO. And because of the lack of cloud computing operations related laws and regulations. If the data is out of the question, the ultimate responsibility can not be investigated, the loss of the enterprise can not be imagined. But for these problems cloud service providers also provide a number of solutions, such as the data sent to the cloud before the encryption and so on.

The worst thing about cloud computing is the collapse of the entire platform for cloud computing, which poses a serious threat to all businesses in the cloud. While these problems exist in cloud computing, many companies are still moving data to the cloud because of the ease with which cloud computing can provide services.

Companies move data to the cloud

Yale's Ford said it would be unwise to move data to the cloud before the security risks of cloud computing are fully resolved. Just as Trinidad and miles--he points out that the more complex the system, the more likely it is to have problems in unexpected places. He also simulates some simple environments in which cloud computing can be problematic.

Ford has envisioned a number of different situations that might occur. He simulates a simple environment in which cloud operators assign services to two virtual servers, using an energy-balanced program to switch computing loads from one server to another as needed. However, application providers may also have a load balancing program that can assign user loads.

Ford assumes that two balance programs have the same refresh cycle, say, once every minute. When the cycles of the two balancing procedures happen to coincide, the calculation load generated by the control loop will be back and forth between the virtual servers.

By feedback, the two controllers would provide greater computational power, which would result in a greater computational load when the next cycle met, Ford said. As a result, the controller will eventually lose control and may even crash the system because of the increased computational load.

Ford is cautious about describing these risks, he says: This simple example may be fixed in development or testing and not in the actual system, but it still implies risk.

In fact, the coupling between this application provider and the infrastructure provider is unavoidable, in particular, when cloud service provider systems are opaque, cloud service providers cannot fully present the key information in the cloud to the application provider for their own commercial confidentiality and security considerations. The application provider does not know the control structure in the cloud, let alone avoid it.

Ford's presentation of the opaque hierarchy, which could lead to potentially unexpected catastrophic failures, is reminiscent of the financial meltdown.

However, lack of transparency is only one part of many problems. In a complex system, there are some common problems, that is, some unrelated parts will be combined in unexpected ways, bringing risks. There is a growing consensus that there are often strange and unpredictable phenomena in the system of cloud computing. Now more and more complex theorists are beginning to admit this.

10 minutes of lightning crash evaporated billions of dollars

One obvious example is the "flash crash", which has caused great harm in many financial markets, with a dramatic plunge in stock prices, but no exact reason. Many studies now focus on figuring out how the "flash crash" occurred and why.

Although cloud computing providers say their systems have been carefully designed and tightly monitored, there is no such problem. But cloud computing is the most complex building in the web, and it's evolving, and we can imagine that something like a "flash crash" in cloud computing must be inevitable.

Cloud vendors ' explanation of the problem is a dangerous signal to users. They say the above problems mean that these cloud providers don't understand these issues, let alone they have solutions.

Ford gave us a good idea-we should look at these potential crises before our socio-economic structures are inextricably linked to this precarious computing model.

(editor: Heritage)