Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document.
Note: Even the most advanced machine translation cannot match the quality of professional translators.
Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Overview
A cluster consists of two or more systems or nodes, which provide applications, system resources, and data for users as a sustainable system. Each cluster node is an independent system that has complete functions.
A high availability (HA) cluster keeps running in the event of a fault, ensuring almost continuous access to data and applications. However, these faults cause a single server to break down. A single fault, such as a hardware, software, or network fault, does not cause the failure of a cluster.
A Sun Cluster system is a set of closely connected nodes, which provide a single management view for network services and applications. The Sun Cluster system enables HA by combining hardware with software as follows:
- Redundant disk systems provide storage.
- Redundant hot-swap components, such as power supply and cooling systems, maintain the continuous operation of the Sun Cluster system after hardware fails, improving system HA.
- Based on the HA framework, the Sun Cluster system can quickly detect node faults and migrate applications or services to another node that runs in the same environment.