Embedded Linux And Its Application In The Network-attached Storage

Along with the high-speed development of communication technology and network technology, we have stepped into a digital era. The embedded system based on high-tech have permeated through scientific research, engineering, military, business, culture & art, amusement, etc. With the further popularization of embedded products all over the world, with people's strong reliance on network, embedded system is applied in various network equipments more and more extensively. And embedded Linux is the most popular operating system for it's cheapness in price, powerful function, and good portability to embedded platforms. Then the research and development on the embedded Linux Network-attached Storage System has a considerable application prospect.A new design and implement of Network-attached Storage System with embedded Linux technique is provided in this paper, based on the analysis of embedded Linux system. The new system is suitable for the networks of medium and small-sized enterprises, and school laboratories. It differs from the traditional storage servers for its excellent characteristics such as good portability, high integration, powerful function, cost and time saving.A comprehensive description about embedded Linux system and its development technology is given in the first part. Then the design of the Network-attached Storage System based on embedded Linux is given, which mainly include: reduction of the Linux kernel, build of the root file system, embedding of the system, and build of the RAID. Firstly, through the code analysis of the Linux kernel, the article chooses a suitable method to reduce the kernel. Secondly, the article analyses the file system build on the Memory Technology Devices, and creates the root file system with Ext2fs, which can load some application programs. Thirdly, The article discussed the method to embed the whole system into DiskOnChip2000, and gives solutions to solve the problems occurring during the process. Lastly, the article discussed the implement of the RAID.