fc5 : raid array does not appear as one drive?

[dirk ooms]

Hello list,

My server has an on-board raid controller (Intel ICH7R) that has one raid 1 
array configured (2 SATA disks). The controller uses the Adaptec driver.

In the FC5 documentation i read "Each active RAID array appears as one drive 
within Fedora" (chapter 5), but during the fedora install procedure two 
drives are detected: sda and sdb.

What am i missing?

Thanks in advance for any guidance.

dirk