I am putting together a 3 drive RAID internally in my MacPro 2009 Quad 2.93GHz to store my working files. Boot/Apps are on Accelsior. The drives I am using are Seagate ST2000DM001. What I was wondering is, if it is possible to use this 3 drive RAID as a Photoshop scratch disk as well? Will Photoshop have any issues using a RAID volume as a scratch disk? Will I see benefits as compared to using a single HD? Any comments or opinions would be greatly appreciated.