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Glossary

Server cluster

A cluster is a group of servers that work together as one system. They share the load, and if one server fails, the others take over its work. You build a cluster when the load no longer fits on one machine or when downtime costs too much.

Why it mattersThe contact center keeps running if a server fails, and it can handle growing load.

Also called: Cluster, Server farm

Purpose

Why you need a cluster

  • Spread the load when you have many agents
  • Keep working when one server fails
  • Add capacity without stopping the system

Architecture

How it works

The parts of the system run on different machines: telephony on one, applications and the database on another, reporting on a third. For reliability, standby machines are added next to the main ones – if one fails, a standby picks up the load.

Comparison

One server or several

Single serverCheaper and faster to set up, but if it fails, work stops.
ClusterCosts more, but the system survives the loss of one machine and scales easily.

In CONTACT.WORK

How it works in CONTACT.WORK

For about ten agents the platform needs one machine, for about thirty – two, for about sixty – three, and for 200 agents – four, with each role (telephony, database and applications, microservices, reporting) on its own machine. When downtime is not an option, we add standby servers and combine everything into a cluster; this setup takes up to a week.

More

Where to use it

Server calculator Size your servers with standbys Learn more On your servers How we install the platform on your own servers Learn more

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Related terms

Fault toleranceOn-premises deploymentData centerVirtual server

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