I'm in the process of layer out my apps for a new UCS deployment and want to allow for dedicated TFTP and MOH servers.   I'm currently sizing my Call Managers (for call processing) servers for 10K users with 4 cores each.   Is there any reason I can't add (2ea) 2 core MOH and (2ea) 2 core TFTP servers to the cluster or is there a limitation that all Call Manager servers in a cluster must be sized the same (all using 4 cores)?

Also, where can I find sizing information about TFTP and MOH with the different OVAs?   If the above is possible, I want to make sure I'm not sizing my TFTP and MOH servers too small to handle the laod.

Thanks,

Glenn