I have the RAID set up to mirror with two IBM 60GXP 40G HDs. We use this computer as a server for our small office with all of our critical data on it. I have been reading about the failure rate of these drives and it has me kind of worried. They are mirrored, so I guess I am protected somewhat, but my question is, is if one of the hard drives goes bad, will the software that came with the motherboard alert me? I there a way to tell? Is there a way to test the harddrives when mirrored to see of they are both working? Thanks in advance.