The Lenovo ThinkSystem 240GB S4520 SATA 6Gb/s Read Intensive 2.5" 7mm Hot Swap Solid State Drive uses 144-layer Intel 3D NAND TLC Flash Memory technology to provide an affordable solution with industry leading performance. It is optimized for read-intensive applications such as boot, web servers, lower data rate operational databases and analytics. By combining the latest flash memory technology with Intel’s latest controller technology, the design of the S4520 delivers consistent performance, reduced power consumption, and end-to-end data protection, as well as being optimized for IOPS/watt and cost/IOPS.