Glossary  /  Cloud & operating models

What do servers in a cluster do? A look at computer networks

A cluster is a group of computers in which servers are combined into one efficient unit. They are joined over a network in which these servers – often high-performance machines – are linked by switches and load balancers. The individual members of this group, known as nodes, can sit in one place or be spread across several sites. What matters is that every node acts autonomously, so that load within the cluster is shared across different systems.

Cloud & operating models ·1 Min. Lesezeit ·Glossary

Telling HPC and HAC apart

The main distinction runs between the high performance computing cluster (HPC) and the high availability cluster (HAC). An HPC system maximises performance, whereas an HAC puts the emphasis on data security. An HPC mainly serves to distribute load, while an HAC prioritises data redundancy so that a backup copy is always available. Both use load balancers to spread requests evenly across the servers in the cluster. In an HAC this optimises hardware utilisation and operation; in an HPC it increases the speed of data access. That gives a first impression of computer clusters and what the servers inside them do.

Practical uses of server clusters

In real-world scenarios such server groups are essential for critical IT services. Many leading companies run server farms in cluster configurations in order to handle large volumes of requests and to protect themselves against possible system failures. Rented clusters are an alternative approach. Providers such as centron offer a range of server solutions, from the basic model through to highly complex systems for customers who place great value on data security and performance.

More on this topic

Scalable managed clusters for your applications

Our managed clusters are the right answer for data-intensive and business-critical applications. Benefit from highly available managed services tailored to your requirements.

More about Managed Clusters Discover Managed Services

Get started for free

Sign up and receive €200 credit at centron within your first 60 days.

This promotional offer applies to new accounts only. Available exclusively to businesses.