The San Disk X210 is the high-end SATA SSD designed for the client computing, data center, & server markets. Based on 19 nm MLC NAND flash, it introduces a set of features & enhancements to support businesses that prioritize fast, consistent access to data, such as search engine & cloud storage providers & streaming media companies. Built to provide leading performance in read-intensive environments, the X210 also significantly reduces I/O bottlenecks & greatly improves random I/O performance & multi-stream capabilities. At the heart of the X210 is a high performance controller & San Disk's own 19 nm All Bit Line (ABL) architecture. All Bit Line architecture offers twice the parallelism of conventional Half Bit Line (HBL) architectures; increasing both performance & endurance. The drive also supports a unique feature to improve random write performance & ensure a very positive user experience. Modern operating systems mostly access the storage device using small access blocks, with the majority being 4 KB access blocks. The small logical access blocks conflict with the physical block structure for the newer generation flash memory technology.