We have been using Windows Server 2008 and Exchange Server 2007 installed on that. We are planning to create a new instance on SAN for Windows/Exchange so that if first Exchange Server overloads, we can move that instance to other instance created on SAN.
Shall we need to buy two more licenses (one for Windows and one for Exchange) for that new instance ?
As far as I know, one license can be used for one instance only (production instance). Can we use the same license if we move existing instance to a new instance ?