Honeywell Experion R310

We are using Dell poweredge PE2900 as a redundant server and running with windows 2003 server ( service pack 2). Now we want to change one server but poweredge PE2900 has been obsoleted. We requested dell poweredge T610 server from Honeywell but they supplied wrong model T620.

Is it possible that windows 2003 server can be loaded as primary windows on Dell poweredge T620 and it can be synchronized with existing server dell poweredge PE2900.