Hi. I use a Mac Pro and have a 24TB RAID which holds most of my media. My problem is how best to manage the Media Cache which gets very big, certainly to hold on my OS drive (as recommended) . I could store it in a separate "cache" folder on my RAID but will this effect performance? Or is it best to save it with its media? I would rather not trash the Cache files as I often need to draw upon older projects and it's media for current projects. I think this is the weakest part for FCP editors switching to Premiere.
certainly to hold on my OS drive (as recommended)
That is the first thing I do: move the Media Cash Database to another drive or in any case off the OS drive.
OS drive is only for Operating System and Programs.
Ideally you should have five internal 'drives':
You've got the OS and Media drives worked out, now get those other three in place.