Macrumors seems to be a shitty source for information on this subject. Tons of threads all with different reports. I'm currently running a Velociraptor as my system drive and a WD 1TB Black as my data drive, with a Seagate 1.5TB as my Time Machine drive. Now that I'm downloading movies from newsgroups my available capacity is quickly reaching zero so I'm looking into a RAID setup. Ideally I'd like to run 4 1.5TB drives in a RAID 10 or 5. The questions I have are these... Which RAID cards are bootable under 10.5.6? Can any 3rd party RAID cards access the drives through the logic board like the Apple RAID card does? If not, how do you connect the drives to power and run the data cable to the RAID card in the stock drive bays?