Reliable and Flexible Storage System for NAS Environments

The rapid growth of high speed multimedia services demands the large capacity of the server`s storage that maintains the multimedia contents. Among the server`s devices, the low I/O speed and physical or logical failure of storage device decrease the total performance of system. The continuous increase of multimedia contents require the flexibility of storage capacity. In order to solve the these problems, we propose the uses of software RAID and LVM techniques that provide the performance improvement and reliability of storage device and the flexibility of storage device respectively. In the LINUX 2.4 kernel, we implemented the reliable and flexible storage device and evaluated the performance of it.