My workstation at work is one of the few computers in the office without a $900 PercRAID card in it. In fact, it's running on ATA-66. So, as an experiment, I "persuaded" Windows XP to let me use its secret software RAID capabilities and I mirrored my hard drive. Obviously it's safer now, but I can't tell if there's been any increase in the data transfer speed. Does anybody know if the Windows software RAID will actually read from both drives in a mirrored setup in order to increase the effective data transfer rate?