can't "see" 2nd hard drive

[ccrichard]

This means the first drive has the Operating System and you cannot do anything else with that first drive.

You could just buy a small flash USB drive and make that your boot volume and then make a raid 1 or buy more drives and make a raid 10.
If your array controller has some good utilities, you should be able to present the Array as Logical Volumes. I have not yet been successful at this myself.
I also strongly suggest against a raid-0. If one drive fails, you lose everything.

[ffeingol]

Hello,

It's only in our lab and only for testing, so ignore the fact that it's RAID-0.

Physically we have 2x750 GB hard drives. you are correct that OpenE is installed on 2 GB of the first drive. So you're saying that I can't use the remainder of the drive + the 2nd drive to create a RAID-0? It's not a biggie as this is just for testing but it seems really odd.

[ccrichard]

Yes, it does an automatic configuration of the drive so no matter how big, the first hard drive gets used only has a boot partition/OS.