Mention NAS and the first thought that pops into many minds concerns the rapper. However, a more enduring and arguably more useful application of the acronym applies to Network Attached Storage. The electronics version of NAS is a file level type of computer data storage that connects to a computer network. A large, diverse group of computer clients can access to the NAS at the same time. Hence, the storage system has more application for large organisations, such as multi-national corporations and federal governments. NAS functions specialise by hardware, software, or a combination of each computer element. Manufacturers construct NAS as a computer appliance that operates as an autonomous unit rather than a mainframe computer component. While NAS has more pertinence for large organisations, the technology is beginning to catch on with smaller organisations and even home network users. Most computer experts consider NAS to be the most convenient method for sharing files among multiple computers. The advantages of using a NAS system over other types of data storage systems include faster data access, simpler administration, and an easy to understand network configuration. NAS systems contain one or more hard drives that often arrange into logical storage containment facilities. The purpose behind this system is to remove the responsibility of file serving from the primary servers on the network. Separate data storage operations allow the primary servers to perform more operations within a shorter period. NAS hardware does not require a separate operating system and most systems run on open source platforms. The file-based protocols used by NAS run the gamut from NFS for UNIX systems to AFP for Apple computers. NAS devices cover three broad categories that include computer-based, embedded-based, and ASIC-based storage systems.