Building a complete new machine in the new year, most probably an Intel 9550. Considering a pair of Velociraptors in RAID 0 but after reading how Ubuntu has issues with software based raid controllers I was wondering if anyone has any experience with full hardware ones? I'm looking at the **Adaptec 2420SA** mainly. I'd be grateful for any advice/tips. Only real consideration is that a run 2 or 3 VirtualBox's at the same time. I don't know thsi would make a difference. Perhaps even moving to a new distro might be an idea. Thanks!