Several misunderstandings of server virtualization

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1. Unable to bear high price pressure
     
&When calculating the cost of server virtualization, we need to consider four factors: hardware cost, energy cost, software cost and labor cost. Usually, the initial goal of virtualization is to use multiple virtual machines to disperse the cost into these systems to balance the high-end hardware and reduce the cost. If deployed properly, virtualization will help users reduce costs. The right architecture requires reasonable planning and careful technology selection. And now the vSphere 4.1 introduced by VMware company makes it possible for small and medium-sized enterprises to use this technology.
     
2.The security of virtual machine is limited
     
&With the frequent occurrence of recent security incidents, all walks of life are paying attention to the problem of security. Virtualization technology plays an important role in server security, and its security is no less than other physical server systems. The negative information about security comes from the virtualization requirements of * * operating system. A typical * * operating system is a bare metal Linux system. You have to manually install secureshell. This means that * * operating systems are very secure due to the limited number of operations, and so are standard network services.
     
3. The proportion of server consolidation is too high
     
&Most enterprise users‘ original intention of deploying virtualization is to use it as a tool for hardware integration, but there is a gap in the proportion of integration now. This question depends on the type of virtualization technology you are discussing and the number of virtual machines you question. The ideal integration ratio of underutilized physical systems to appropriate scale and available virtual machines is 3:1. The 3-to-1 ratio refers to a fully virtualized system, not a container virtualization with a consolidation ratio of more than 10-to-1. Server integration is inseparable from good planning, starting from the investigation and research. Clear business and financial objectives. Set up a schedule. Accurately describe daily business and it operations and set benchmarks. And to form a document. Finally, the support system is established.
     
4. It is very difficult to master and maintain server virtualization technology
     
&Server virtualization itself is a system, and a single person cannot complete the maintenance, which requires the cooperation of virtualization administrators from different departments. For example, it is difficult for a storage team to properly configure Linux involving virtual servers; set up operating system security, and administrators will not know what tools they really need now without the help of necessary paths and applications. Therefore, it requires integration or team communication. Virtualization technology has no special requirements for the standards and skills of enterprise support personnel: Linux, UNIX and windows services have hardly changed under the virtual infrastructure. The technologies needed to support physical environments can easily be used in virtual environments. The operation mode of virtual operating system is very similar to that of physical operating system.
     
5. Server virtualization complicates system management
     
By design, a virtualized infrastructure is not as complex as a physical infrastructure. Forrester, a research organization, suggests focusing on four main functions of system management: configuration management, capacity planning and virtual machine deployment, performance monitoring and real-time automation. As long as the four functions are well coordinated, the system management can be realized. A single management interface can be standardized with any virtual platform. From a single interface, administrators can view the system console, create a backup, restart or shut down the system, change the hardware and fully manage the system.