Asus DSBV-DX/C - Manual (Page 130)

5-16 Chapter 5: RAID configuration
8. Follow steps 8 to 12 of the Creating a RAID set: Using Easy Configuration
section.
9. When prompted, save the configuration, then press to return to the
Management Menu.
10. Follow steps 8 to 13 of the Creating a RAID set: Using Easy Configuration
section to add the new RAID configuration.