I'm setting up a server, which will host confidential information at a third party location. For security reasons I would like to have some sort of encryption for the data stored on it (3 external HDs worth of data). The server is running WHS2011. No confidential data is stored on the system drive, only the external HDs.
Could you tell me what the best way would be to encrypt those external drives, so that they would be unusable when plugged up to a different system.