[AlwaysOn] 建立SQL Server高可用性組T-SQL語法：CLUSTER_TYPE引數

CLUSTER_TYPE = { WSFC | EXTERNAL | NONE }

在SQL Server 2017中引入。Introduced in SQL Server 2017.

用於標識可用性組是否位於Windows Server故障轉移群集(WSFC)上。Used to identify if the availability group is on a Windows Server Failover Cluster (WSFC). 當可用性組位於Windows伺服器故障轉移群集上的故障轉移群集例項上時，設定為WSFC。Set to WSFC when availability group is on a failover cluster instance on a Windows Server failover cluster. 當群集由非Windows伺服器故障轉移群集(如Linux Pacemaker)的群集管理器管理時，設定為EXTERNAL。Set to EXTERNAL when the cluster is managed by a cluster manager that is not a Windows Server failover cluster, like Linux Pacemaker. 當可用性組不使用WSFC進行群集協調時，設定為“NONE”。 Set to NONE when availability group not using WSFC for cluster coordination. 例如，當一個可用性組包含沒有叢集管理器的Linux伺服器時。For example, when an availability group includes Linux servers with no cluster manager.