Instance

Computer Name Physical Net BIOS

NetBIOS name of the local computer on which the instance of SQL Server is currently running.
For a clustered instance of SQL Server on a failover cluster, this value changes as the instance of SQL Server fails over to other nodes in the failover cluster.
On a stand-alone instance of SQL Server, this value remains constant and returns the same value as the MachineName property.
Note: If the instance of SQL Server is in a failover cluster and you want to obtain the name of the failover clustered instance, use the MachineName property.

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Instance

Cluster Quorum Type

Type of quorum used by this WSFC cluster (one of NODE_MAJORITY, NODE_AND_DISK_MAJORITY, NODE_AND_FILE_SHARE_MAJORITY, NO_MAJORITY:_DISK_ONLY, UNKNOWN_QUORUM, CLOUD_WITNESS.
Instance

Cluster Name

Name of the WSFC cluster that hosts the instances of SQL Server that are enabled for Always On availability groups.

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