Single quorum device cluster vs Majority Node Set Cluster

Types of Quorums

There are three types of quorums you can setup for your cluster.

• Single node cluster
• Single quorum device cluster
• Majority node set cluster

Single node cluster – mainly use for testing and development. The quorum is stored locally. This is a one node setup.

Single quorum device cluster – provide high available services/applications. The quorum is stored on a shared resource. All nodes share the same quorum. This setup is the most common and used the most.

Majority Node Set Cluster – Available with Windows 2003 servers. This setup enable nodes to save the quorum locally. Each node will have their own copy of the quorum. Nodes can be located in different geographical location. This require a three nodes setup. Otherwise, for example in a two nodes setup, if one node fails, the virtual server won’t be able to start up.