A proxy cache scheme of network storage

Network storage has many advantages, it does not only provide users with large storage space, but also provides users with sorts of I/O services to satisfy users´ requirements, however, it also brings new problems, such as difficult storage management and low I/O performance. The proxy cache scheme is proposed to solve those problems. The proxy is configured at user network to integrate storage space and provide users with suitable I/O interface, which can simplify clients´ storage management. The cache is configured at the proxy to reduce network traffic and improve clients´ I/O performance. However, the normal replace algorithms, such as LFU, LRU are not suitable in network storage. According to the I/O performance definition, a cache replace algorithm named least access time is proposed to optimize cache performance. Theory analysis and experiments proved that the scheme was feasible.