How to monitor for Disk Failure on HP ML350 G6

How to monitor for Disk Failure on HP ML350 G6

So we have OpManager installed and running and SNMP setup.  I can see all my branch servers and various alarms and statistics.
 
But I need to be able to monitor for diks failure form the RAID controller.
 
I can see no hardware monitoring at all in OpManager on these servers.
 
What do I need to do to monitor the disks?  Is ther any documentation anywhere that gives a guide on how to setup this type of monitoring?
 
Rob

                New to ADSelfService Plus?