Z77 ASRock MB ICH10R RAID 01 MIRROR 2x 3TB Seagate HDD reports 2 individual drives of 750GB not 1 Mirror of 3TB in Acronis Disk Director 2011, Windows 7 and Windows 8 Professional. If I format each drive in Acronis as a Basic GPT I can see 2 x 3TB drives. I have the latest firmware on MB and HDD. The BIOS is UEFI. These are data drives not boot.