1. Enter in to the storage system’s “debug” mode.
2. Execute “ps -ef | grep agent” command, if the output hasn’t contained the content marked in the red frame of the following picture, we can consider that the information of the storage system agent service hasn’t been displayed normally.
Figure 1. The information when the agent service start normally
Hence, we can conclude that the storage system agent service has started abnormally, and causes the ISM can’t discovery the storage device.