Vertical Flash cells for SSDs

Samsung’s V-Nand, a new type of Flash cells, makes it possible to have durable and large SSDs. Two dozen Flash cells are stacked together in a semi-conductor layer. V-Nand stores data as electrons in an isolator. The Control Gate fills and empties it. The data is read out via a channel. V-Nand is constructed in a 30nm process but achieves the storage density of a normal 20nm Flash, which achieves only 3,000 deletion cycles while V-Nand achieves more than 30,000.