I've had a change of heart with the HDD, I'm going to get a 1TB drive and combine it with the 1TB I've already got in my existing machine. Does the MOBO I've got support RAID 1 so that I can mirror to the older drive? Also, for RAID 1 does it matter if the two hard drives are different make? They'll be the same size (1TB each) but different speeds (my current one is a 3Gb/s SATA whilst the new one will be 6Gb/s).