The EMC vnx5200 fault light is on, but there is no hardware fault prompt

The customer reported that there was one VNX5200 The storage system , Fault light on , Yes DPE Faulty event Tips , But no faulty parts can be found . The system display is shown in the figure below ：

  For this kind of problem , There's only one way , closed spcollect journal , It is impossible to judge the cause of the fault just by looking at the prompt of the graphical interface .

Here are the collected spcollect Interpretation of logs ：

The system prompts that the fault is from bus 1 enclosure 1, As shown below ：

We can narrow the scope to this expansion cabinet to see what the problem is ？

from SPA Of KTCONS journal , You can see clearly that drive fault

  But from SPB Of KTCONS I can't see anything in the log drive fault Report errors .

This is the root of the problem , It means that a controller thinks that a disk is broken , The other controller thinks that the disks are normal , Therefore, the system has an alarm and can't find out whether any specific part is wrong .

To continue to check splogs journal , Find out 1-1-6 Disk large scsi Report errors .

  After replacing this disk , The fault light disappears , Problem solving .