I have an Unity 4.0(4). As I understand from the documentation, Cisco recommend to use 3rd party backup for backup Unity. Is Cisco support backup 3rd party backup software like HP- data protector 5.1?
Please review these two docs. You have to test your backup/restore procedures. You will be surprised how many people think they have a good backup only to find out their tapes are not usable after the fact.