Asus TS300-PA4 - Manual (Page 177)

ASUS TS300-E3/PA4 & PS4 6-49
6.4.9 Rebuilding a RAID set
2. Press <R>.
While rebuilding the array, you can press <Esc> to stop. A pop-up menu
appears for confirmation. Select Yes to stop rebuilding and return to the main
menu.
A Build/Rebuild Completed message appears on screen to indicate that
you have successfully rebuilt the array.
3. Press any key to return to the main menu.
The rebuild option is available only for RAID 1 and RAID 10 sets.
To rebuild a RAID set:
1. From the main menu, select the RAID set you want to rebuild, then press
<Enter>.