Asus TS300-PA4 - Manual (Page 163)

ASUS TS300-E3/PA4 & PS4 6-35
3. Select RAID-0 (High Performance, No Fault Tolerance) from the Select
RAID Type menu, then press <Enter>.
Refer to the Striping Requirements note at the bottom of the screen to
determine the number of hard disk drives required for the selected RAID type.
4. Use the arrow keys to select a RAID set member, then press
<SpaceBar> to mark. An X mark appears after the selected HDD.
5. Follow the step 4 to select the other members of the RAID set, then press
<Enter> when finished.