I'm trying to set up a print server cluster in ESX. The servers are Windows 2008 Ent. and on separate ESX hosts. I have both of the shared disks for the quarm and application added and visible on both servers but when I try to add the quarm or application disk to the windows cluster it says that there are not any disks available. It alos says this when I run the clustering configuration tests. Both of the shared disk are RAW luns presented to both servers in physical compatibility mode and the both the OS drives are VMDKs that have been created using the thick disk option. Does anyone have any ideas on why it doesnt like the disks or what can be done to correct this issue?