Following the highly publicized losses of backup tapes containing sensitive information about firms customers, many organizations are examining their own policies and technology options for protecting data when it moves outside their corporate walls. Firms have three primary options for encrypting data before it goes out the door on tapes: Turn on database encryption; 2) turn on tape backup encryption; or 3) install a storage encryption appliance. Firms with performance concerns, large volumes of encrypted data, and a healthy technology budget should consider specialized storage encryption appliances.”]
Source: https://www.csoonline.com/article/2119059/your-best-tape-backup-encryption-options.html