Hey Thomas,
The SRP key and auth key are stored in the BESMgmt database in the "ServerConfig" table. After you have reinstalled your new BES, just point to the correct SQL server and the BESMgmt database.
For virtual machine support, VMWare ESX Server version 2.5.2 or later is supported with BlackBerry Enterprise Server software version 4.1 Service Pack 2.
Source:
KB04405 What Is - Virtual Machine software is not supported for BlackBerry Enterprise Server installation