Oracle X2-4 not showing all drives

[Clift, Tom CIV NSWCDD, K55]

 All, I am in the process of building two Redhat Servers on Oracle X2-4 hardware. Redhat version is 5.7. Both systems have two scsi hard drives, however I can only see one drive. Is there a command similiar to "format" from the Solaris world that will list out all available disk drives? 

If I use fdisk -l, I only see sda1 and sda2 which is the drive that Redhat was installed to. I don't see anything listed in /dev similiar to sdb or hdb which is the way I understand it to work. I am in the process of learning Redhat after a long background with Solaris.
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