Abstract: This paper introduces the approach based on the fault injection to test the recovery time of mass storage systems，then gives the evaluation of the availability effected by the fault，and designs the method to simulate the workload of the system，manual fault injection to mass storage system and disk failure injection to SCSI disk.

Key words: fault injection, availability test, SCSI disk

摘要： 阐述了针对海量存储系统的可用性测试方法，采用基于故障注入的方法测试系统的恢复时间，给出了故障对系统可用性的影响评价，设计了模拟系统正常运行的负载设置方法、手动注入故障和模拟SCSI磁盘故障的方法。

关键词: 故障注入, 可用性测试, SCSI磁盘