In our environment we have been encrypting our backups for years. We now have a requirement to turn TDE on our Databases and I was trying to determine if turning on TDE would impact our encrypted database backups. I understand that in order to restore a TDE Enabled database to another server that the certificate had to exist on the target server as well. I'm just trying to figure out is there anything I need to do with the encryption related to backups. Also for backups that were done prior to turning on TDE can those backups still be used to restore with?