3D Nand Technology which using stacking of flash memory technology is reaching cost effectiveness for the SSD market. 3D Nand Technology which previously was impractical and too expensive according to WD, is now becoming practical. WD will be selling the 3D SSD products under the WD and the Sandisk brands featuring the 64 layers of nand flash memory with up to 2TB of capacity with more optimized performance, better durability, and better energy efficiency.