Shulou(Shulou.com)06/03 Report--

1. Virtualization concept: virtualization means that computing elements run on a virtual rather than real basis, using "virtual" software to replace or simulate "real" hardware products such as servers, CPU, networks, and so on.

two。 Server virtualization: server virtualization refers to abstracting the physical resources of the server into logical resources, making a server or a group of servers into several virtual servers isolated from each other.

3. Several features of virtualization:

1) A virtual machine is a computer that simulates a complete hardware system.

2) all virtualized resources run transparently on a variety of physical platforms.

3) Virtualization hides unnecessary details from users, and users do not have to care about the configuration and deployment of physical devices when using virtual machine systems.

4) Virtualization is mainly used in computing neighborhoods, including virtualized data centers, distributed computing, server consolidation, high-performance applications, customized services, private cloud deployment, cloud providers, etc.

5) Virtualization applications are mainly testing, experiments, teaching and training, etc.

4. Virtual storage: in virtualized applications, resources are usually pooled, such as CPU computing pool, memory pool, storage pool, network IP pool. Pooling shields the underlying hardware features in order to unify all resources and make more rational use.

5. Virtual machine clone: a clone of an existing virtual operating system. The clone parent must be in a shutdown state before the clone operation can occur.

6. Virtual machine snapshot: snapshot can maintain the state of the virtual machine at a certain point in time, including disk, network, memory, and so on. If you want to save the existing state of the virtual machine so that you can return to the existing state in the event of an operation error, you can use the create snapshot feature. This feature can also help users do better testing.

7. Virtual machine migration: static migration is also known as regular migration or offline migration, that is, migration from one host to another when the virtual machine is shut down or paused.

8. Virtual machine migration: dynamic migration is also known as online migration, that is, moving a virtual machine system from one host to another while ensuring the normal operation of services on the virtual machine. In order to ensure the availability of virtual machine services during the migration process, the migration process has only a very short downtime. This method does not affect the normal use of users, the migration process is transparent to users, and it is convenient for users to maintain or upgrade the physical host offline. it is suitable for situations with high requirements for virtual machine service availability.

9. Virtual machine desktop display: divided into local access to virtual machine desktop and remote access to virtual machine desktop

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.