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This article introduces the advantages and disadvantages of using server to build infrastructure cloud. The content is very detailed. Interested friends can use it for reference. I hope it will be helpful to you.

Using server virtualization technology to build an infrastructure cloud has both advantages and disadvantages.

The advantages include:

1. Improve hardware utilization

With the continuous improvement of PC server performance, CPU gradually adopts multi-core, so it is difficult for a single application to make full use of hardware resources. In addition, different applications have different requirements for hardware resources in different periods of time, for example, large stock trading volume during the day, large precious metal trading volume at night, traditional methods can not dynamically deploy hardware resources between applications, which also results in a waste of hardware resources. The adoption of server virtualization can provide independent operating systems for different applications on the same physical server, and allow hardware resources to be dynamically provisioned among different applications; according to the importance of the application, performance requirements, performance peak time and other factors, multiple virtual machines can be established on one server, thus improving hardware utilization. The improvement of hardware utilization also reduces the requirements of the server on the computer room environment (space, power supply, heat dissipation, etc.).

two。 Improve management efficiency

The traditional way to manage the PC server as an individual is cumbersome in the aspects of application deployment, application migration and exception handling. After the server is virtualized, all the management work can be done through a unified interface.

Application deployment: the traditional way of application deployment is to install operating systems, patches and deploy applications. For the same application, these operations need to be repeated many times in the R & D, testing and production environment, which consumes a lot of manpower. It is also difficult to ensure the consistency of the environment. After virtualization, the operating system and patches can be made into a template; the template is provided to all applications, that is, the system needs to be installed only once, which not only reduces the workload, but also ensures that all applications have the same basic environment.

Application migration: for PC servers that reach the expiration date, the above applications need to be migrated to servers with higher stability. In addition, at different stages of development and testing, the same application also needs to be carried out under different hardware resources, which also involves the migration of applications on different physical machines. The traditional way of application migration is more complex and can not be carried out online. After the server is virtualized, the application migration can be completed quickly, conveniently and even online.

Exception handling: when an exception occurs in the production environment, it becomes extremely difficult to reconstruct the relevant environment for fault analysis. After adopting server virtualization, a production-consistent environment can be obtained by backing up virtual machines online, which can be provided to remote technicians for analysis.

3. Compatible with old applications

The new PC server no longer supports older systems such as Windows98, but commercial banks still have some applications deployed on the old operating system. After adopting the virtualization architecture, the old system can be virtualized on the new hardware, which solves the problem that the old application can not run on the new hardware.

Disadvantages include:

1. It is more difficult to manage

The virtualization architecture makes the IT architecture more flexible and can be adjusted, which may affect the performance of the virtual architecture and even the normal operation of the virtual architecture due to improper configuration, misoperation and other reasons. To solve this problem, administrators must have an in-depth understanding of the virtualization architecture, which is a fundamental requirement for the successful implementation of the virtualization architecture.

It seems that there is no cost to create virtual machines, which may lead to the proliferation of virtual machines. Too many virtual machines will greatly increase the management and maintenance of the operating system. To solve this problem, it is necessary to plan the life cycle of virtual machines and strictly limit the growth of virtual machines. In addition, virtual architecture can not reduce the maintenance work at the operating system level.

two。 Support difficulty

The vast majority of operating systems and applications are not officially claimed to support virtualization architecture. If there is a problem, the operating system and application software manufacturers may not provide technical support services; even if they provide technical support services, there may be buck-passing between operating systems, application software manufacturers and virtualization manufacturers.

3.SAN storage demand is greatly increased

The flexibility of the virtualization architecture depends on SAN storage; with the adoption of the virtualization architecture, the demand for SAN storage will increase greatly.

The pros and cons of using servers to build infrastructure cloud are shared here. I hope the above content can be helpful to you and learn more knowledge. If you think the article is good, you can share it for more people to see.

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