Asus NCCH-DLE - Manual (Page 147)

A S U S N C C H - D L E A S U S N C C H - D L E A S U S N C C H - D L E A S U S N C C H - D L E A S U S N C C H - D L E 5 - 3 5 5 - 3 5 5 - 3 5 5 - 3 5 5 - 3 5
6. When prompted, use the arrow keys to select the source disk, then
press <Enter>.
7. When prompted to start the duplication process, press <Y> to
continue; otherwise, press <N> to abort the operation.
8. After you have created the RAID 1 set, press any key to reboot the system.
During POST, the FastTrak S150 TX4™ BIOS checks and displays the
disk array information.
9. Use the FDISK utility to format the array as a single hard drive.
10. After you have formatted the arrayed drives, install an operating
system (OS). The OS will treat the RAID 1 array as a single drive unit.