Hi Ray,
you are with a thunderbolt connection, so you Raid is your fastest option. I would edit on the Raid.
And believe me, Raid 5 is the minimum redundancy you need. You won’t realize the little bit of slower speed when you’re working. Raid 5 slows the Raid just a tiny bit. We all tend to go for Raid 6, because of experience! The more safety you can afford, the better it is. Raid 0 is no option!
A Raid is just there working working working, you don’t have to think about it, it’s just there. (a Quote from Walter Biscardi)
To my knowledge a 4bay Raid can’t be operated on Raid6, therefore I recommend the pegasus 6.
Cheers
Rainer
factstory
Rainer Wirth
phone_0049-177-2156086
Mac pro 8core
Adobe,FCP,Avid
several raid systems