Incredible transfer speed
The WD My Book Thunderbolt Duo is the perfect external hard drive for graphic designers, music producers, visual effects artists, and architecture studios. The revolutionary bi-directional Thunderbolt technology delivers unmatched speed that lets creative professionals design, store, edit, render and produce graphics, movies, music and more in record time.
* The graph shows the data transfer speed in KB/s.
Massive Capacity
With a massive 4 terabyte capacity, you'll have more than enough space to store your projects, videos, music, and other important files.
High Speed and Maximum Protection
The dual-drive storage system features RAID or JBOD modes. When set to RAID 0, it provides the highest level of performance; when set to RAID1, it automatically duplicates your data for extra protection.
Connect Multiple Drives
The dual Thunderbolt ports allow you to daisy chain up to six drives. This delivers unmatched speed for multi-tasking while editing HD video, 3D rendering and completing other graphics-intensive projects.
User-friendly
The case of the WD My Book Thunderbolt Duo can be opened without any tools, so it's easy to replace both drives once full.
WD Drive Utilities
Register your drive, run diagnostics, manage RAID or JBOD modes and more using WD Drive Utilities.