SEPM server move to one server to another server

Hi guys,

     We have a plan to migrate our sepm server.

OLD SEPM server details:

Windows 2008 R2

SEPm 12.1.4 with Embedded Database

Plan to New SEPM:

Windows 2012 R2

SEPM 12.1.5

So what are the steps are required??We no need to old server??