If you need a solid amount of external storage space, value Thunderbolt, and want something with RAID capabilities, then check out OWC’s Mercury Elite Pro Dual ($430-$950). Coming in capacities ranging from 2TB to 10TB, it’s a smart and fast solution for backup, extra file storage, and anything else you might need an external drive for. It’s also going to bring back some memories of the big old silver Mac Pro—although this…