SAP ERP EHP5 +Windows 200rr2+Oracle 12.1+MSCS(OFS 4.1) Upgrade problem

Dear ALL,

Now we have A ERP EHP5 on Windows 2008r2 , Oracle 12.1 on MSCS cluster with OFS 4.1 ,we want to upgrade the OS and keep All system information same as old. How to upgrade it to Windows 2012 or more higer . we have tried upgrading with in place method, it was failed because the MCSE can't be upgrade to Win2012 directly. so my question is , if i want to upgrade and keep all system information same as old system, for exameple, IP Address, Hostname, SYSID and so on. is it possible? i double , if it can be upgrade successfully , even if i shut down the old system when setup new servers with former infomation (ip ,hostname), because the all instllaton is relative the domain, for example , the SIDADM of OS . now i don't how to upgrade ?

anyone have experence for this, thanks

Roger