ASROCK 4COREDUAL-SATA2 Installation Manual page 19

Select one type by clicking corresponding item and click <Next>.
B. Select Controller and Creating Method
Select a controller to create array. As soon as you select one controller, the disks you will select for this array will be limited on
this controller. Besides, you have to select the creation method in this step. Selecting "Auto", the tool will select array disks for
you, and you don't need to do anything. Selecting "Custom", tool will list all available disks in the available disks list, and you have
to select disks for the array manually. You may adjust the selected disks manually in both cases.
C. Select Array Disks
19