From: Kaushal Shriyan <kaushalshriyan at gmail.com> > Yes I have setup RAID 1+0 Array using HP Smart Controller B110i BIOS. > It shows usable disk space of approx 940 GB but the OS does not see it > instead it shows all the 4 * 500 GB HDD. When you say "It shows usable disk space of approx 940 GB", do you mean the array is 940 GB or the logical drive inside the array is 940GB? And I think on such controller you can have 2 logical drives max... JD