Hi Ruben
You have to do the system copy by using backup/restore or attach/detach method.
Kindly follow the link
http://joeysbasisblog.blogspot.com/2010/10/sap-system-copy-procedure.html
System copy guide
https://service.sap.com/instguidesNW70 base on your version
and follow the SAP Note 1476928 - System copy of SAP systems on Windows 2008 (R2): SQL Server
Thanks
Ram