研究磁盘阵列的Ｉ／Ｏ调度问题．给出了建立在实时操作系统上的系统调度模型；在分析磁盘的Ｉ／Ｏ调度算法的基础上，提出一种适合磁盘阵列的多队列实时调度算法．该算法为每个磁盘指定了一个请求队列，并根据请求之间的依赖关系确定可并行执行的任务组．测试结果证明，新算法具有很好的性能 Study disk array I / O scheduling problems. A system scheduling model based on real-time operating system is given. On the basis of analyzing the disk I / O scheduling algorithm, a multi-queue real-time scheduling algorithm suitable for disk array is proposed. The algorithm specifies a request queue for each disk and determines the task groups that can be executed in parallel, based on the dependencies between the requests. The test results show that the new algorithm has good performance