Alongside the new My Passport for Mac, Western Digital also released its MyBook VelociRaptor Duo today, a monster setup that offers two 1TB 10,000 RPM hard drives and dual Thunderbolt ports so you can daisy-chain multiples together if you're rich, or connect other Thunderbolt-compatible devices. That's 2TB of storage that can be configured in a RAID 0 or RAID 1 configuration with speeds of up to 400 MBps. That's fast. Time Machine compatibility is built-in right out of the box, and a Thunderbolt cable is thrown in as well. Ready to make the purchase? Expect to drop $899.99 on these bad boys.