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本文分析了磁盘访问延迟产生的原因和传统磁盘坏道管理方案在磁盘坏道数目增多时重映射扇区寻道距离方面的局限性,结合全硬件结构SATA主机控制器的需求,提出了基于寻道距离优化的磁盘坏道管理策略,通过数学分析和仿真表明,采用该坏道管理策略的磁盘寻道距离仅为传统坏道管理方案下的1/n,其中n为磁盘分区的数目,磁盘分区数越多,该方案在坏道重定向方面的优势越明显。“,”This paper analyzied the reason of disk access latency and the limitation of seek distance in the bad sectors reallocation of the traditional disk management when the disk failure is growing. With the demand of the whole-hardware structure SATA Host Controller, a management stragety based on the seek time optimization has been proposed. The result of mathematical analysis and simulation shows that the management stragety which proposed in this paper is only needs to seek 1/n (n represents the number of disk partitions) of the distance compared with the original ones. As the disk partition grew, the stategy become more competitive.