As the capacity of SSDs continues to increase, it’s looking like prices might start dropping soon, according to a report from InformationWeek. Experts cite 3D NAND as the largest game-changer thus far, according to Techspot.

SSDs are expected to surpass the capacity of HDDs by 2016, and the first 30 TB SSD is expected to debut in 2018. Over the last year, the price of SSDs has steadily decreased. Now, many believe that the cost difference between SSDs and mechanical storage will be slimmer than ever before by the end of 2016.

Hard drives, which appear to be hovering around 10 TB, will eventually be no match for the SSD of the future. Prices of SSDs have been steadily slipping since 2014, and they will continue to do so through the end of the year, according to experts.

To speed up the process, 3D NAND has arrived onto the storage device scene. NAND flash device architectures are one-dimensional, meaning they can store more data by increasing density, according to StorageSwiss. Companies such as Intel and Micron have already begun working on producing 3D NAND. They are expected to be implemented in a variety of devices by 2016.