It means that VT8237 SATA RAID only has the feature of monitoring the status of RAID 0 or RAID 1.
Click on 
or 
button to determine the viewing type of left window pane. There are
two viewing types: By controllers and by device. Click on the object in the left window pane to display the status of the object in the right windowpane. The following screen shows the status of Array
Click on the plus (+) symbol next to Array
