Asus RS100-E4/PI2 - Manual (Page 142)

7-10 Chapter 7: Driver installation
6. When asked if you will load additional RAID controller drivers, select
Yes, then install the additional RAID controller drivers.
7. Follow screen instructions to continue the OS installation.
5. When prompted, insert the Red Hat ® Enterprise ver. 3.0 RAID driver
disk to the floppy disk drive, select OK, then press <Enter>.
The drivers for the RAID controller are installed to the system.