airport

Hi, I using XPEnology DS3612xs DSM update 4 on gigabyte mainboard. South Bridge: 5 x SATA 3Gb/s connectors supporting up to 5 SATA 3Gb/s devices 1 x eSATA 3Gb/s port on the back panel supporting up to 1 SATA 3Gb/s device now. i connectd internal HDD 2TB X 5 / it's ok on SHR but, I connected an 2TB WD Harddrive via eSata. for external backup 2TB eSata-Drive is not under external device. It appears in the Store-Manager (unUsed 1 disks) as pic below,