Database Migration Service 会将您上传到 Cloud Storage 存储桶的备份文件中的所有数据迁移，但源数据库中存在的部分功能可能在 Cloud SQL for SQL Server 中不可用。Database Migration Service 迁移作业不会恢复不受支持的功能所涵盖的数据，但目标 Cloud SQL for SQL Server 实例可能会在日志中生成警告或错误。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-08-18。"],[[["\u003cp\u003eDatabase Migration Service migrates data from uploaded backup files to Cloud SQL for SQL Server, but not all source database features may be supported.\u003c/p\u003e\n"],["\u003cp\u003eA single migration job can handle up to 20 databases, with only one job allowed per destination Cloud SQL for SQL Server instance.\u003c/p\u003e\n"],["\u003cp\u003eBackup files can be a maximum of 5 TB each, and if the database size exceeds 5TB, striping into smaller files is allowed, but must remain under the maximum file size.\u003c/p\u003e\n"],["\u003cp\u003eThe source SQL Server instance must not use the simple recovery model.\u003c/p\u003e\n"],["\u003cp\u003eThe migration service does not migrate the SQL Server \u003ccode\u003emaster\u003c/code\u003e database, user information, or jobs that are not linked to a specific database.\u003c/p\u003e\n"]]],[],null,[]]
