What is cluster technology?
The cluster technology can be defined as follows: a group of independent servers act as a single system in the network and are managed in a single system mode. This single system provides high availability services for customer workstations. In most modes, all the computers in the cluster share a common name. services running on any system in the cluster can be used by all network customers. The cluster must be able to coordinate and manage the errors and failures of the separated components, and add components to the cluster transparently. A cluster contains multiple (at least two) servers with shared data storage space. When any server runs an application, application data is stored in the shared data space. Operating systems and applications of each server
Program files are stored in their local storage space. Each node server in the cluster communicates with each other through an internal LAN. When a node server fails, the applications running on this server will be automatically taken over on another node server. When an application service fails, the application service will be restarted or taken over by another server. When any of the above faults occurs, the customer will be able to quickly connect to the new application service.
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