Hello Nick, > Just to give you some insitie. Raid controlers differ in speeds based on > the interface ie. SCSI, (parallel, serial) ide. It is unlikely that an > onboard (depending on manufacturer) will difer from an "ad-in" card in terms > of speed. You will, most certanly notice a performance increase with a > stripe. The sole premase of the idea states that if one drive is active the > controler will access the other drive. Obviously, the more drives you have > on the array the faster the system. To answer your question I would try 3d > Mark 2000 for starters. For a more difinative answer YOU are the best judge > of how you system responds. Try it both ways. I run striped arrays on all my > machines, because I know it's faster. If redundance is what you seek, > consider another drive (out of the array). If your running NTFS it can be a > trifling experience to rebuld an array with a mirror if one drive fails. So, > my point is why waste the space. I got a deal on the drives, two 200 gig WD's, so wasting space is not really a concern. I'm not as diligent as I should be with backups though. That's why I thought the mirror would be best for me. I'll give the test routine a try. I've also ran across a few that test disk speed only though they are older so I'm concerned that they may cause trouble with NTFS if I try using the write portions so I haven't done that yet. Guess I'll just have to try the raid both ways and see what I like best. Thanks for the input. -- Jack http://www.mycandysupplier.com