As there was no effective solution from the members, I kept on trying various things but with no success. Finally I decided to delete the RAID and build it again using different controller on mobo. But before that I thought of trying once again, but this time using Mrvell's Tray Utility to build RAID-0, instead of going into the BIOS to build it and then while initializing the volume I did not select 'LBA' mode for MBR. That did the trick and now the Raid vol is accessible.
I am sriting this so other members may find the info usefull. Thanks