Elusive cloud, well understood cloud security

Mentioned cloud security, can not but mention cloud. So what is a cloud? Clear sky, cloudless, which means good weather for the rest of us. However, there must be another concept of "cloud" in the minds of employees of a leading enterprise in the field of information security. Because in the field of computers, "cloud" is a virtual computing resource that can be self-maintained and managed. Usually, it is a large cluster of servers, including computing servers, storage servers, broadband resources, and so on.

It is called "cloud" because it has in many ways many features of real clouds:

1, the clouds are generally larger

2, the scale of the cloud can be dynamically scalable

3, clouds in the air erratic, unable and need not determine its specific location, but it does exist somewhere

4, the cloud's boundaries are vague, elusive, the saying goes, "Who knows what cloud it rains."

Mentioned cloud, can not fail to mention cloud computing. So what is cloud computing? In order to better understand and understand cloud computing, many experts and scholars try to define cloud computing in different ways and in different ways. Cloud computing is based on virtualization technology, based on the network as a carrier to provide infrastructure, platforms, software and other services for the form, the integration of large-scale scalable computing, storage, data, applications and other distributed computing resources to work together supercomputing mode. Cloud computing as a new model of Internet applications, will become the dominant way for people to access services and information in the future.

In the cloud computing model, users no longer need to purchase complex hardware and software, such as using the cloud office does not need to install the office, and only need the cloud office can. Since the use of the cloud, our PC can not install a lot of things, then the PC will be lightweight development. Personal PC is usually called the terminal, then the next generation of PC, called the "cloud terminal", it no longer requires CPU, hard disk, graphics card, or even operating system and application software, because these functions are all done by a public cloud server. "Cloud computing" will change the mode of the computer now "chassis + display", the future cloud terminal is just a small set-top box, or directly built into the display, the price is low compared with the traditional PC system: Procurement of cloud terminal system will save a lot The input. At the same time, it is foreseeable that the operation and maintenance of IT will reduce the cost burden by 90% and make operation and maintenance easy.

Now that we know what cloud and cloud computing are, we can understand cloud security well. An important value of cloud computing is the scalability of software and hardware requirements on demand, but completely out of the local computing, cloud computing data resources is only a more ideal state. Taking into account the private cloud, legacy systems, reliability, security and other factors, cloud computing is currently only has the special significance of the integration of resources. Here we explain:

Private Cloud is a cloud built for the sole use of a company, and therefore has the advantage of stability, security, and controllability.

2, legacy system is a system that has been running for a long time, is very important for the organization, but often do not know how to deal with large software systems.

Cloud security appears because of the following concerns about cloud computing:

1, security issues. Although sharing is a good Internet spirit, how much does it share with the security of information (confidentiality, integrity, availability). Cloud is shared, there are naturally security issues, this is easy to understand.

2, reliability. We can not see the cloud of physics. Invisible, touching, we can rest assured that this is a problem.