With increase of the requirements of digital data, the scale of Distributed Parallel System becomes much huger, File Allocation Problem has become one of the key problems of Distributed System.

• 近年来，人们对数据的需求量不断上升，造成分布式系统规模日趋庞大，文件资源的放置问题已成为分布式文件系统核心问题之一。