I have set the DHCP failover clustering up, using one iSCSI target 3.3 server and two win2008R2 servers (following the step-by-step http://technet.microsoft.com/en-us/library/ee405263(WS.10).aspx). The whole instalallation was smoothly and i have been able to publish DHCP service and final users are working with it succesfully. The problem now is the testing, it looks like the service is only hosted in one of the two DHCP servers because DHCP1 server has it's own IP address and the Virtual cluster IP address, and DHCP2 has it's own IP, and cluster's admin IP. So, if i put DHCP2 offline the service runs ok. But if DHCP1 is offline nothing works, i mean, final users don't receive IP, and i can't open the failover clustering admin tool from the DHCP2 saying that the cluster is not reachable. From the admin failover cluster i have changed the actual owner to DHCP2, but the results are the same now when DHCP2 is down. So, i'm not sure if i understood as well the failover clustering concept, if this is the normal behavior, or if may be will be necessary to do more configurations to get the full failover functionality. What i'm looking for is to give final users DHCP high availability in the case of a disaster for one of the two DHCP servers. I appreciate any comment.

Fernando, it appears that you have posted a similar question multiple times. Have you tried to post this question in the HA/Clustering forum? That would be the most appropriate category for this thread. Visit: anITKB.com, an IT Knowledge Base.