Abstract The S3520 Enterprise Entry SATA solid-state drives (SSDs) for Lenovo servers use Intel 3D NAND flash memory technology with a SATA 6Gbps interface to provide an affordable solution with industry leading performance. This product guide provides essential presales information to understand the S3520 SSD offerings, their key features and specifications, components and options, and configuration guidelines. This guide is intended for technical specialists, sales specialists, sales engineers, IT architects, and other IT professionals who want to learn more about S3520 SSDs and consider their use in IT solutions. Introduction The S3520 Enterprise Entry SATA solid-state drives (SSDs) for Lenovo servers use Intel 3D NAND flash memory technology with a SATA 6Gbps interface to provide an affordable solution with industry leading performance. Compared with the Intel S3510 series, these new drives offer significantly improved endurance and lower power consumption. The S3520 SSDs are optimized for read-intensive applications such as boot, web servers, lower data rate operational databases and analytics. Did you know? By combining the latest MLC NAND flash memory technology with Intel''s latest controller technology, the design of the S3520 Enterprise Entry SATA SSDs delivers consistent performance, reduced power consumption, and end-to-end data protection, as well as being optimized for IOPS/watt and cost/IOPS. Rigorous testing of S3520 Enterprise Entry SATA SSDs by Lenovo through the ServerProven program assures a high degree of storage subsystem compatibility and reliability. Providing additional peace of mind, these drives are covered under Lenovo warranty.