Available in a wide array of capacities, ranging from 240GB of SSD storage to 3TB of traditional spinning hard drive space, OWC’s Mercury Elite Pro Dual mini ($192-$1,028) is more interesting than the standard portable hard drive. Each different model actually comes with two equal size drives, preset to either RAID-0 or RAID-1, based on your preference. If you want to take advantage of the total storage space, go with the former, and if you want data redundancy, choose the latter.
There are plenty of RAID systems out there, but few are this small, and portable. Mercury Elite Pro Dual mini can connect to your computer via USB 2.0, eSATA, or FireWire 400/800. If you’re using FireWire, it doesn’t even need an extra power source. For those who already have drives and just need the enclosure, it starts at $75.