虚拟化方案的基本思路(虚拟化的优点跟缺点)

1. One-stop comprehensive solution
The so-called one-stop solution means that the solution provider must provide services from early project planning to mid-term implementation. The full solution from three stages to post-maintenance allows customers to enjoy efficient manufacturer-level support at any stage of the project. Specifically: first, in the early planning stage of the project, the solution provider must help the customer complete multiple project tasks such as overall technical planning, software and hardware cost accounting, feasibility analysis, etc.; second, in the mid-term implementation stage, the solution provider must provide All technical services include hardware platform construction, software system deployment, network system debugging, and storage system installation. Thirdly, in the later maintenance stage, the solution provider must provide hardware equipment warranty, software technical support, virtual system training, etc. Professional services allow customers to easily build, use and manage virtual systems.
2. End-to-end service support
The so-called end-to-end means that the solution provider must provide a single service interface to form the connection between technology and business of the client and server business ports, allowing Customers enjoy the simplest technical support services. Specifically: first, in terms of scientific aspects, the solution provider must have mature solutions and be able to fully assume the responsibility of technical support for all projects such as software, hardware, network, storage, etc. of the virtualization system; second, in terms of service In terms of philosophy, solution providers need to follow the concept of simplifying IT and strive to continuously simplify customers' IT systems; thirdly, in terms of service measures, solution providers must aggregate the technical strength of various manufacturers to provide customers with technical architecture and basic platforms. , to virtual systems and other levels of technical support. Fourth, in terms of service span, solution providers need to follow the principle of combining help and education to provide customers with the most professional and comprehensive technical training services, so that customers can gradually transform from passive recipients of technology to active innovators, allowing customers to easily Maintain virtual systems with ease.

Virtualization technology implementation principle:
The concept of virtualization has appeared very early. Simply put, virtualization is the process of taking certain programs and making them look similar to other programs.
Applying this concept to computer systems allows different users to see different single systems (for example, a computer can run Linux and Microsoft Windows at the same time). This is often called full virtualization.
Virtualization can also use more complex formats, where a single computer appears to have multiple architectures (to one user, it is a standard x86 platform; to another, it is an IBM PowerPC® platform ). This form of virtualization is often called hardware emulation.
Finally, a simpler type of virtualization is operating system virtualization, in which a single computer can run multiple operating systems of the same type. This kind of virtualization can isolate multiple servers with one operating system (meaning they all have to use the same type and version of the operating system).
How virtualization technology works:
The bottom of a virtualization solution is the machine to be virtualized. The machine may or may not directly support virtualization; then hypervisor layer support is required. The hypervisor, or VMM, can be thought of as an abstraction of the platform hardware and operating system. In some cases, the hypervisor is an operating system; in this case, it is called a host operating system.
On top of the hypervisor is a guest operating system, also called a virtual machine (VM). These VMs are operating systems that are isolated from each other and regard the underlying hardware platform as their own. But in fact, it is the system management program that creates this illusion for them.
The problem with current virtualization solutions is that not all hardware supports virtualization well. Older x86 processors will produce different results for specific instructions depending on the execution scope. This creates a problem because the hypervisor should only be able to execute in a most protected scope. For this reason, virtualization solutions such as VMWare scan the code to be executed in advance, thereby replacing these instructions with some trap instructions (trap instructions) so that the hypervisor can handle them correctly. Xen can support a collaborative approach to virtualization that does not require any modifications because the guest knows it is being virtualized and has already made the modifications. KVM will simply ignore this issue, forcing you to run on newer hardware if you wish to virtualize.

The server virtualization solution tells you that if you do it, you can achieve the best effect of virtualization. Take Xiangguohe as an example. Xiangguohe data center server virtualization solution is built on the virtualization framework platform. Xiangguohe's server virtualization products with independent intellectual property rights are the core, focusing on customers' needs for high reliability, high availability, easy management and cost reduction of data centers, and creating a more dynamic and flexible data center by simplifying the business infrastructure. , achieve centralized and unified management and improve business agility.
By deploying Xiangguohe's data center solutions, users can save energy, speed up the delivery of applications and services, and truly achieve comprehensive IT management automation and higher business continuity service levels. Do you understand now? If you don’t know, you can go to the official website of Xiangguohe.