I need to add an external HD to my Mac - how fast?
Greetings
My HD is full on my iMac and I need to move about 1TB of videos or photos onto an external HD, which I would be accessing on a fairly regular basis.
Do I need Thunderbolt? Do I need RAID for additional speed?
Ideally, I won't have too much of a performance decrease when moving all of my data to an external HD.
Thanks in advance!
iMac (27-inch, Late 2013), OS X Mavericks (10.9.1)