1.&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Cloud computing status
 
The concept of "cloud computing" has been put forward for several years, and its products, services and cases are also increasing, "cloud computing" has entered the actual application stage. During this period, the East Japan earthquake occurred, from the perspective of ensuring business continuity and disaster response and recovery, the "cloud computing" concept of the importance of a new understanding. "Cloud computing" in the service model, the company's independent operation of security and quality of service management, such as private cloud is particularly noticeable.
 
The "cloud" features are well described in the NIST definition of cloud computing, which refers to "the characteristics of cloud computing (table 1)". Among the 5 features mentioned, "Resource sharing" and "rapid scalability" are one of the pillars of "cloud computing"--the representative method of virtualization import.
 
Table 1 Characteristics of cloud computing (NIST)
 
1
 
On-demand self-service
 
Users do not need to go through the administrator, timely use of the required cloud resources
 
2
 
Extensive network access
 
Use a wide range of client platforms (PCs, PDAs, mobile phones, etc.) to access the "cloud" function over the network.
 
3
 
Resource sharing
 
Reserve Cloud resources, dynamically allocate and release resources according to user requirements. The user does not need to know the exact location of the cloud resource.
 
4
 
Rapid scalability
 
Expand or shrink horizontally according to the needs of the user.
 
5
 
Measurable services
 
Automatically detects resource usage and optimizes resources.
At the same time provide managers and users with monitored and controlled resource usage.
 
2. Virtualization Import and problem prediction
 
In the past, the fixed existence of physical machines restricted the computer environment. This restriction does not exist in virtualization, where computer resources are no longer dependent on physical devices and provide a flexible environment to use. In particular, the introduction of the so-called virtualization technology means that you can run multiple virtual machines on a single physical machine. In addition, because of specific configurations, running virtual machines can migrate between physical machines (online migration).
 
1 Advantages of Importing virtualization
A After server virtualization, you can easily create, remove, and allocate or remove CPUs, memory, and so on. Highly flexible computer resources without relying on physical machines
(B) Reduce physical equipment and reduce the space occupied by physical settings in the data center by consolidating servers.
C reduce the number of physical machines to achieve low-carbon operation.
 
2 problems you may encounter in importing virtualization
A the increase in virtual machines may increase the degree of difficulty in grasping the state of the environment.
B virtual Machine Decentralized configuration on the virtual host, resulting in sometimes the virtual host in a low load state. In addition, the low efficiency of electricity use is one of the reasons for the decrease in cost.
C promote the efficient use of computer resources, change the virtual machine configuration, such as the probability of increasing the workload of the Administrator.
 
3. NEC sigmasystemcenter--Maximize Virtualization Advantages
 
NEC's efficient and unified management of virtual environment and physical environment, optimization of resource allocation, is the first step to maximize the effectiveness of virtualization, NEC launched the resource optimization software Masterscope sigmasystemcenter (SSC). SSC can manage a representative virtualization infrastructure, such as VMware, Hyper-V, to maximize the virtualization benefits described above.
 
1 support for unified management of virtual machines and physical machines
Even if the physical machine is migrated and consolidated into a virtual environment, the virtual host itself continues to operate as a physical device in the system. In addition, virtual machines that manage objects continue to grow because of the ease of deployment of virtual machines.
 
SSC can be managed on the basis of the classification of each virtual machine and physical machine, and the virtual machines can be divided into business groups for batch management. (Figure 1) even increasing the number of management nodes such as virtual machines can effectively operate the environment.
 
 
Figure 1 Unified Management Equipment