IPSEngine Dead

Question

Over the last hour I have noticed 3 of 5 XG appliances I manage have experienced IPSEngine dead, IPS service stopped and will not start. 
 Any suggestions on the cause of this and what I can do to correct? I have logged a case with Sophos.

LuCar Toni · Accepted Answer

You could start to dig into the troubleshooting. 
 GES MER (within my Signature) can help you to find a starting point. 
 Maybe you can find a matching pattern on each defect appliance (Same Firmware, Same Hardware etc.?)

CloudManager · Answer

All of the appliances are running on Microsoft Azure. Sophos have examined one of them and the case has now been escalated.