在此 SQL Server 实例的版本中，数据库镜像不可用。有关不同 SQL Server 版本中支持的功能的详细信息，请参阅联机丛书。
Click to search this error in Google
English version
Database mirroring is not available in the edition of this SQL Server instance. See books online for more details on feature support in different SQL Server editions.
SQL Server