During the evolution of the 3ware product line, the format of the DCB has been changed to accommodate new features. The DCB format expected by the 3ware RAID controller and the DCB that is written on the drive must be compatible. If a unit that was created on a very old 3ware product is connected to a newer 3ware RAID controller, this message is posted and the 3ware RAID controller rejects the drive. Please contact 3ware technical support if this event occurs.