Hello, I need to sort out some lingering ?'s. Firstly, I have heard about this software RAID option in XP and 2000 In "Tom's HW.com". Any experience(s)? Secondly, Is the sustained transfer rate composed of the actual amount of Info with which the HD is able to consistently feed the bus (so a new HD is capable of giving 40-50 MB/Sec of files/reads to Cubase)? Or, Is STR just some irrelevant test where they see how much of one 100MB file gets through the bus in a second? Since Access time has not changed much I bet on the latter. Finally, does having 2 HD's, one for App's/OS, and the other for Audio, actually increase performance? If so, please explain In layman terms(AMAP) how this works? Is this as efficient as a two disk RAID array with a cheap Card/Onboard controller? IF NOT, How/why is Software RAID/Mobo RAID/PCI Card RAID more efficient for track counts and why? Finally-Finally,In arranging a dual HD setup, does it make a differance(of course I ask- WHY???)If the HD's are configured On Primary Master+ Secondary Master or can one or both be hooked up to a slave? and Is there a benefit In the OS/App's HD being primary or is it irrelevant? Thank you, Alex Napack, PS. Have you heard of the new IBM 180GXP, w/8MB Cache AND some "Tag & "*^&%" Queing" protocol which affects repeated accesses into drive memory?