Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3) I just had some pretty bad frame drops during playback when I first opened FCP X, and was told that my disk isn't fast enough. I was using my iMac - see sig - which has a caviar black. All files are on one drive though, is it time to split? What's the best cost-effective set up given my mac and that I'm working with 1080 ProRes files? I don't need heaps of capacity, 2 TB would be fine for a year.