high availability cluster
/ˌhaɪ əˌveɪ.ləˈbɪl.ə.ti ˈklʌs.tə/ IELTSAcademic
noun
A group of connected computers that work together so a service keeps running if one computer fails. It is used to reduce downtime and improve reliability.
- The team built a high availability cluster for the database.
- The cluster stayed online during the server failure.
Adinary Nuance
A high availability cluster is more specific than server or backup. It means several machines work together so one failure does not stop the service. People choose this term in technical and business IT writing when uptime is important. It is not the same as a simple group of servers.
In other languages
- Vietnamese
- cụm khả dụng cao
- Spanish
- clúster de alta disponibilidad
- Chinese
- 高可用集群
- Japanese
- 高可用クラスタ
- Korean
- 고가용성 클러스터
Etymology
This term comes from modern computing and combines “high availability” with “cluster.” It became common as businesses needed systems that stay online with little interruption.
Common phrases
deploy a high availability clusterrun on a high availability clusterhigh availability setupfailover cluster
Synonyms
Related words
Frequently asked questions
- Is “high availability cluster” formal or informal?
- It is formal technical language. You will see it in IT documents, system design notes, and business writing.
- What is the difference between a high availability cluster and a backup?
- A backup stores data for later recovery. A high availability cluster keeps the service running during a failure.
- Can I say “HA cluster” instead?
- Yes, in technical writing and team discussions. “HA cluster” is a common short form.
- Is this a common word in everyday English?
- No, it is mainly used in computing and infrastructure work. Non-technical speakers usually do not use it.