AWS Redshift database encryption

Is it possible to use different encryption for different databases inside of single Redshift?

I other words, I mean, that in case(theoretical case) for example of stolen hard drive from AWS data center, hackers will be unable to decrypt all databases on this drive with the same key?

It appears that:

• Each data block on disk encrypted with a different encryption key
• Those encryption keys are then encrypted using a Database Encryption Key
• That key is encrypted with a Cluster Encryption Key
• That key is encrypted in AWS KMS with an encryption key specifically for Redshift in your account (as opposed to EC2, etc)

See: Amazon Redshift Database Encryption