The Storage Visions Conference has kicked off and Legit Reviews is at the show to check out the latest news when it comes to storage technology. One of our first stops was the SATA-IO booth where WD is going to be demonstrating the world's fastest 4 TB hybrid drive. WD’s prototype drive is basically a traditional 3.5-inch 4TB desktop hard drive that uses the SATA Express (SATAe) PCI-e interface along with up to a 128GB of NAND Flash memory acting an SSD of sorts for caching purposes to help bolster the drives performance. Read on to see how a pair of these drives perform in RAID!