Hi,
First question, can PRTG Network Monitor show RAID controller information?
Make sure Raid drivers/firmware and Insight Management Agents are up dated. Use only SNMP and check the status. If that does not work, post a similar question in PRTG forum.
Some links from HP:
HP ProLiant Servers - Finding Object Identifier (OID) of Components on ProLiant Servers
http://h30499.www3.hp.com/t5/Disk-Array/SNMP-MIB-S-for-Smart-Array-P400-RAID-CTRLR/td-p/5200088
Some links from PRTG:
http://kb.paessler.com/en/topic/903-how-do-i-find-out-what-oid-i-need-to-use-for-a-custom-sensor
http://kb.paessler.com/en/topic/653-how-do-snmp-mibs-and-oids-work
http://kb.paessler.com/en/topic/34063-monitoring-raid-disk-hw-on-esxi-5
http://kb.paessler.com/en/topic/33133-monitor-hp-proliant-via-snmp
Thank You!
I am a HP employee.