Deleting an array destroys all the data on the array. If you need to keep any of the data, be sure to back up the data on a separate device.
To delete an array:
Click Delete in the Logical Devices view.
In the Logical Devices view, select the array(s) you wish to delete.
Click Finish. To safeguard you from deleting the wrong array, a warning message is displayed.
Verify the array listed in the warning message and then click OK.