To set up a Microsoft SQL Server cluster, you will need to follow these general steps:

1. Install SQL Server on each node of the cluster. Ensure that all nodes are running the same version of SQL Server and that each node has access to the same shared storage.
2. Configure the shared storage. This can be a SAN or an iSCSI device. Make sure that each node has access to the shared storage.
3. Create a Windows Server failover cluster. This is done through the Failover Cluster Manager console. Ensure that all nodes are added to the cluster and that the shared storage is added as a cluster resource.
4. Configure the SQL Server instance. This includes specifying the SQL Server instance name, configuring the SQL Server network name, and specifying the shared storage location for the SQL Server database files.
5. Add the SQL Server instance as a cluster resource. This can be done through the Failover Cluster Manager console.
6. Test the failover. Verify that the SQL Server instance fails over to another node in the cluster when a node fails.

It is important to note that this is a general overview of the steps required to set up a SQL Server cluster. The specific steps may vary depending on the version of SQL Server and the specific configuration of the cluster. It is recommended that you consult the Microsoft documentation for detailed instructions on how to set up a SQL Server cluster.