This article will show you how to install Failover Clustering on Windows Server 2012 which has many new features like Cluster-Aware Updating, VM monitroing, support for up to 64 nodes and 8000 virtual machine per cluster.
Before you start remember that in order to create a fail over cluster you should have minimum two server with similer hardware and software level (O/S, updates and Service packs).
You also need to have a private network for cluster comunication and the most important thing Shared Storage.
To start Open Server manager and click Add Roles and Features
In Feature tick Failover Clustering
When Finish restart server
When finish open Cluster manger and run the Validate Configuration Wizard.