No, CFA and PEK files are automatically created and that can not be disabled. Well, in one way you could disable the creation of these files and that is by uninstalling PR, but I guess that is not what you want.
Just change the location of your Media Cache and Media Cache Database files to one of your other drives and choose the fastest one for that.
Also have a look at: Adobe Forums: Generic Guideline for Disk Setup
You know he is probably on a laptop with only one drive Harm.
People dont understand the importance of hard drives and how they write.
I cant wait to see your next unit when you do a full build again.
Your raid is going to be huge.
I envy your top PPBM score.
The power of hard drives really shows.
Glenn, my days have been counted. But I have a worthy successor.
I can't compete with an i7-980X @ 4.2 GHz and a 14 disk array.