Quote Originally Posted by ricktas View Post
Your scratch disc should ALWAYS be a different disc to your program and files storate disk. This is the recommended way by adobe. I have my SSD, and 2 x HDD in my PC, an external HDD and my NAS backup attached at all times. So PS is on the SSD, my working copy of my photos are on one HDD and the second HDD is my scratch disc (and holds a backup of my 1st HDD and my SSD). The external HDD holds another backup of my SSD and files, and the NAS is a 5 HDD array with a backup of everything. I then have another HDD that is stored at friends with another copy of all my files.
Interesting, so you can also store other data on the HDD along with the scratch disc without effecting performance? Do you also store Lightroom preview data etc on the scratch HDD? How big would you recommend the HDD be for storing scratch data be?