Memory technologies vying to fulfill the increasing capacity and density requirements of the solid-state storage market two years from now will be confronted by having to meet demanding cell performance and cost-per-bit metrics to be viable. Today, NAND technology is still the primary solution for building solid-state storage devices (SSD), as the once-promising phase-change memory technology has now lost support among the major industry players as a replacement for NAND. But NAND’s future is limited.