I am currently formatting 4 SATA drives at once. I'm setting up my work machine, and I've suspected for a long while that part of the reason that my work compiles take so long is the amount of data that gets read from and then written out to the hard drive(s). In the interests of science, I have just installed four 250GB SATA drives on my new work machine. I tried to format them to be a RAID 5 array, but Mouthbreathing Operating System folks decided that RAID isn't something they thought was worth supporting on this OS. So, instead, it's just striped - hopefully, that'll be sufficient.
Oooh, in the span of typing this, I'm already at 18% formatted. Once that's done, I can begin installing the serious work software.