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TDE and Backups


TDE and Backups

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Steve Jones
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Comments posted to this topic are about the item TDE and Backups

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Tom Thomson
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Nice clear and unambiguous question.

Tom

dawryn
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Tom.Thomson (8/10/2011)
unambiguous question

Oh, what is a normal backup Ermm a backup before TDE was enabled or backup following standard procedure Blush
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Nice question, thanks.


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Nice simple question.
thanks, Steve

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paul s-306273
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Thanks Steve.
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I got confused with the question and got it wrong. I thought that the normal backups which Steve was referring to might be the backups for databases without TDE enabled. I guess there might be a few who thought like I did.

M&M
rfr.ferrari
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nice question!
thanks steve!!!!


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m mcdonald
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From the referenced article...

Transparent data encryption (TDE) performs real-time I/O encryption and decryption of the data and log files. The encryption uses a database encryption key (DEK), which is stored in the database boot record for availability during recovery. The DEK is a symmetric key secured by using a certificate stored in the master database of the server or an asymmetric key protected by an EKM module.

....

Note

When enabling TDE, you should immediately back up the certificate and the private key associated with the certificate. If the certificate ever becomes unavailable or if you must restore or attach the database on another server, you must have backups of both the certificate and the private key or you will not be able to open the database.


From the article, I didn't consider DEK == certificate
Thomas Abraham
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Seemed like a no-brainer, as I thought that was the purpose of "at rest" data protection. But, I've seen the issues posted above. Some day we'll all converse in an arithmetic language and ambiguity will be a things of the past ... unless we aren't all using the same encoding....

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