Buffalo MiniStation HD-PA1.0TU3 1TB Thunderbolt/USB 3.0 Portable Hard Drive for $199.99 shipped after promo code EMCJJJG43.  Here is a screenshot for reference. Alternatively, it is available at Amazon for $199.99 shipped. It features time machine backup and up to 10 Gbps data transfer speed. Most places have it for about $209 or more.