We have developed a mobile thin-client server named ”HTTP-FUSE-KNOPPIX-BOX” that incorporates mechanisms for increasing performance, distributing load, and providing fault tolerance to achieve a practical HTTP-FUSE-KNOPPIX-based thin-client environment for mobile systems and other environments with limited hardware resources such as CPU and memory. Software RAID raises file input/output performance and RAID redundancy improves fault tolerance. Furthermore, the application of an improved version of DNS-Balance distributes server load and provides fault tolerance by automatically detecting server faults and dynamically switching client servers as needed. The HTTP-FUSE-cloop has also been optimized for embedded environments so that a thin-client environment can be provided in diverse usage scenarios. Evaluation of HTTP-FUSE-KNOPPIX-BOX has shown that its performance holds up to existing thin clients even in a server environment with limited CPU, memory, and other hardware and that sy...