AD Syncronization Server on fail over

Hi All,

           I have configured Active Directory in Q1IM 6.1 installation.  In AD domain configuration wizard, i have given AD synchronization Server as one of the Job Server name (AD_JobServer1).  How can i configure fail over?  If AD_JobServer1 box is down, how can i move all jobs into AD_JobServer2 box?

Do I need to manually change Domain configuration value to AD_JobServer2 or is there any other way?

thanks in advance.

Jai.