The latest generation of embedded/industrial applications requires faster data transfer and robust, reliable data storage. The trend is towards SSDs that are optimally connected to the system. Interfaces for rotating media such as SATA III with 6Gbps can no longer exploit the performance of the fastest storage devices. PCIe is available in the third generation to increase transfer performance. This white paper provides an overview from history and definition, technologies, form factors, technical characteristics and advantages of the Solid State Disk (SSD). In particular, it also explains the advantages of PCIe SSD solutions.