Not sure if I posted this in the right place but here it goes: Okay, so currently I'm running 3 users on my MacPro. I have all drive bays full. There's 2x1.5TB and 2x1TB. I use the 1TB's for Time Machine and Scratch for Final Cut and Pro Tools. It seems as though having this many users has slowed things down a bit. I was thinking of setting up 1 user (mine) on a dedicated 1.5TB drive and the others on the other 1.5TB drive. Or, reinstalling the OS clean on one 1.5TB drive and putting all the users there and then moving their respective Home folders onto the other 1.5TB drive. Any suggestions or comments?