The Lenovo ThinkSystem 960GB S4620 SATA 6Gb/s Mixed Use 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. An advanced data center drive optimized for mixed read-write performance, endurance and strong data protection, this drive offers improved endurance. With up to five full drives writes per day (DWD), the S4620 is an excellent choice as cache in transactional applications and high-speed storage for enterprise databases.