Currently Being ModeratedNov 9, 2013 10:22 AM (in response to Forever Searching)
The previous discussion at the link may be of interest:
Currently, I do my primary editing on my rMBP, with a dedicated Thunderbolt drive as the host of the Managed Library (about 2 TB current). I now do my first clone backup to a USB3 drive, which can then be used as a source to further clone back to a dedicate drive in my old Mac Pro.
Hope this helps.