We've set up our 2 Unity servers as per http://www.cisco.com/en/US/docs/voice_ip_comm/unity/5x/installation/guide/vmexfo/5xcuigvmefo050.html - we have 2 servers,UNINTY01 as the primary and UNITY02 as the secondary. UNITY02 is the DC. In the above guide you have to reset the account that SQL Server Services logs on as to a domain account - On both the primary and secondary servers for Cisco Unity failover, you must reset the account that the MSSQLServer and SQLServerAgent services log on as. The account must be a domain account. However when you do this on the
DC then when that server reboots, the services will surely fail on start up as the domain accounts cannot authenticate to the DC - how can the service accounts log in to the domain if the DC hasn't started yet??