Asus Pedestal/5U Rackmount Server TS500-E4 Server - Manual (Page 165)

ASUS TS500-E4 6-29
6.2.8 Selecting the boot drive from a RAID set
You must have created a new RAID configuration before you can select the
boot drive from a RAID set. Refer to the Creating a RAID set: Using New
Configuration section for details.
To select the boot drive from a RAID set:
1. From the Management Menu, select Configure > Select Boot Drive, then
press .
2. When prompted, press the to select the bootable logical
drive from the list, then press .
3. The logical drive is selected as boot drive. Press any key to continue.