Thanks for posting!  IT Assistant is built to discover and monitor Dell hardware.  With a pair of servers clustered to provide high availability virtual machines, you have three kinds of IP address: The physical IP addresses of the two servers The virtual IP for the cluster The virtual IPs for the virtual machines The first kind is the only one you want to ask ITA to discover, since it is the only one that should have OMSA installed, and the only one that is permanently connected to a specific piece of hardware.  Using the Discover Only Instrumented Devices option is a good one, but leaving the virtual IPs out of the discovery ranges is better.  I have seen a variety of strange errors with discovering virtual IP addresses, and generally the best policy is to skip them. As for the 2008 R2, make sure the SNMP service is installed and configured.  In 2003 it gets installed by default, but you have to add that feature in 2008.  Also, turn off the firewall and test it, that sometimes helps too.
Hello, We have several Win 2008 R2 clusters that are running Hyper-V and none of them are showing up in IT Assistant.  We have lots of other servers and clusters running different OS's that are showing up.  Whenever, I try to troubleshoot the 2008R2 servers, IT Assistant shows that the PING and SNMP tests pass.  The IP ranges are correct and these servers used to show up as unknown.  At first, none of the clusters showed up properly.  After reading the forum, I've set the discovery to only discover instrumented devices.  Now the unknown systems are all gone, the 2003 clusters show up correctly, and the 2008R2 systems are completely gone. Does anyone know if 2008 R2 is supported?  (All of my servers are running OMSA 6.2)
IT Assistant 8.6 not finding any Windows 2008 R2 servers