如果安装数据库镜像我已经在另一篇文章中说了:
http://www.cppblog.com/wangjia184/archive/2008/03/27/45525.html说说另一个问题
安装好后, 无法使用域帐号启动: "The service did not start due to a Logon Failure"
1. 我的域帐号和密码是正确的,不然报错信息会不同
2. 我的域帐号的权限也是可以的. Domain Users | SQLServer2005MSSQLUser$COMPUTER$MSSQLSERVER
查看了微软的在线帮助
http://support.microsoft.com/kb/259733/en-us发现还有一项"Log on as a service "需要配置
首先登陆到域控制器, 打开mmc.
File -> Add/Remove Snap-in ,打开域的默认组策略



将帐号添加到此属性中

然后登陆到每台服务器. 在命令行中运行 GPUpdate /Force, 更新组策略
C:\>GPUpdate /Force
Refreshing Policy

User Policy Refresh has completed.
Computer Policy Refresh has completed.

To check for errors in policy processing, review the event log.
运行gpedit.msc,检查新的组策略是否已经被更新到了本地

大功告成,这个时候就能够使用域帐号启动MSSQL2005实例了