Hi, We already have DHCP installed and running on a Domain Controller , Windows Server 2008 Standard SP1 64 bit O/S. This server also has Active Directory and dns. The DHCP scope is already defined and has several reservations. Also it is using MAC filtering. There is a second Windows 2008 server as a Domain Controller , running dns and Active Directory. So we need to implement DHCP redundancy or cluster or a backup failover DHCP server. What is recommended and not sure adding to or splitting the DHCP scope would be an option as need to have reservations and MAC filtering. An automated solution would be nice but is it possible to implement without changing the current working DHCP server ?