Transp[arent Data encryption

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Hi,

I have a client who wants to run TDE on their SQL 2008 Enterprise Server.

I am concerned that when we backup the database, the certificate etc will be backed up with the master db, along with the encrypted database, so basically we backup the encrypted db along with the key needed to decrypt it, and all of these get sent offsite on the same tapes.

Is anyone else doing this? how are you getting round it?

Thanks for your help