So exactly my point, why migrate when you can upgrade and save all the hassle.
Two ways -
1. Upgrade your old cucm to 8.X, take a DRS backup and restore on the new hardware. Licences will need to be rehosted.
2. Take a DRS backup on 7.X server, restore to a 7.X on the new hardware and then upgrade the new hardware to 8.X to complete. License rehost is still required since there will be a mac address change. I am not sure however
if GLO is still doing rehosts for 8.X etc.
Nipun Singh Raghav
"We cannot solve our problems with the same thinking we used when we created them"