I am upgrading my raid 1 system that presently has two 60 GB HD . I am upgrading to two 320GB HD and have already replaced one of them. My problem is that the system recognizes the new HD, but only at 60 GB not 320. When I go to put in the next new 320 GB HD will I only have 60 GB or will it recognize the larger HD’s?I do not want to lose the data from the old HD.