[M_Six]

I have a 3TB USB 3.0 drive on my work machine where I back up my card dumps (RAW files). So there are two copies at work, one on the machine and one on the external. I also dump to my laptop and back that up to a 1TB external, then I do the same on my home PC with mirrored 1TB drives and a 2TB external. So I have several copies including two outside my home.

I have a 50GB box.com account where my finished jpgs get sync'd regularly.

This combo drive is cheaper that the 500GB SSD I dropped in my MacBook Pro. If I were to just be upgrading that now, I'd go with one of these combo drives to have the speed and space.