How to Rename SQL Server Cluster Virtual Server Name(Network name)
Rename a SQL Server Failover Cluster Instance
The name of the virtual server is always the same as the name of the SQL Network Name (the SQL Virtual Server Network Name). Although you can change the name of the virtual server, you cannot change the instance name. For example, you can change a virtual server named VS1\instance1 to some other name, such as SQL35\instance1, but the instance portion of the name, instance1, will remain unchanged.
Before you begin the renaming process, review the items below.
To rename a virtual server
前端程式可能需要幾秒鐘或3到5分鐘或更久(depending on network configuration)才能成功連線到SQLServer。
For connections from any node in the cluster, the new name can be used almost immediately. However, for connections using the new name from a client computer, the new name cannot be used to connect to the server until the new name is visible to that client computer. The length of time required for the new name to be propagated across a network can be a few seconds, or as long as 3 to 5 minutes, depending on the network configuration; additional time may be required before the old virtual server name is no longer visible on the network.
To minimize network propagation delay of a virtual server renaming operation, use the following steps: