PowerVault MD3200i : "Raid Controller module as gone to failed state"

Hello,

We've got this alert "Raid Controller module as gone to failed state".

But MDSM is green, and Guru doesn't display any error.

A month ago we've got this:

Node ID: san4

Host IP Address:

Host ID: Out-of-Band

Event Error Code: 1710

Event occurred: mai 21, 2015 6:32:45 PM

Event Message: RAID Controller Module wide port has gone to failed state

Event Priority: Critical

Component Type: RAID Controller Module

Component Location: Enclosure 0, Slot 1

If anybody have an idea, please feel welcome.