Self-encrypting hard drives offer hardware-based encryption of data when they are written to the hard disk. The Trusted Computing Group (TCG) has published the vendor-independent Opal standard for self-encrypting hard drives. Different hardware vendors offer Opal-compliant hard drives. SafeGuard Enterprise supports the Opal standard and offers management of endpoints with self-encrypting Opal-compliant hard drives. For more information, see Sophos knowledgebase article 113366.