2003 RAID 5 array Question

We have a brand new Compaq/HP ML 330 G3 server.  What we would like to do is setup a RAID 5 array on the built-in CSB-6 RAID controller.  Since the controller only supports 0, 1, and 0+1, we were planning on using Windows Server 20003's software RAID 5.  We are not trying to software RAID the boot partition or system drive.
 
The problem we are having is that we are getting large spurts of random drive / controller failures in the event viewer and server monitors.  On the Microsoft site, they say you can't use software RAIDs and hardware RAIDs on the same disks, but we trying to figure out if that is what's happening here.  The controller BIOS calls the single non-RAIDed drives RAID 0, and doesn't give an option for anything else.  
 
Do you think they are both doing some form of RAID and thus creating a conflict?  Or could one bad disk in a Windows RAID 5 array cause random errors on all drives and the controller?
 
Any help would be much appreciated.
ECohenAsked:
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ryangormanCommented:
Don't be so cheap. You've bought a quality server that includes basic RAID levels. You may be restricted to one array on the built-in controller. Compaq will sell you an add-on card that upgrades the supported RAID levels and allow multiple arrays.

Non RAID volumes attached to a RAID controller will be referred to as multiple RAID0 disks. Essentially you'll have 'Disk Striping without Parity' across each individual disk. You can then configure these as RAID5 under Windows 2003. I don't know why you're seeing errors.

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Windows 2000

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