Thank you Matthias & Alexander. I find it difficult to trust "software" RAID from past experience on other O/S platforms, and from the purely logical perspective. It may be better than the Promise junk, but not as good as "real" RAID. A true hardware based array only offers the O/S its controlled interface to the array. i.e. One gadget that requires a driver to communicate requests thru, but all the RAID logic happens via silicon that is not corruptible from the O/S. There is no access to the arrays hardware parts like hde and hdf as in my example. Software RAID is corruptible by definition. To those users of other on mobo RAID chip sets - Does the O/S see the underlying hdX devices that the array is utilizing? I'm hoping that a real RAID chipset mobo exists so I don't have to fork over lots of $$$ for a RAIDCORE, 3WARE, or ADAPTEC controller. Bill Gradwohl YCC (817) 224-9400 x211 www.ycc.com SPAMstomper Protected E-mail www.stomperware.com