We've got an ESXi 5 host with 6 guest VM's on an ML350 G6. One of the VM's is an Ubuntu server running Nagios. I have installed the check_esx_hardware plugin but I am unsure whether it's actually monitoring hard drive failure. I also notice that in vSphere client - config tab - health status there is no storage heading listing the ports and hard drives. If it's not listed there does that mean that the cotroller/hard drives aren't able to be monitored (by 3rd party apps)?
TIA!
you can try Veeam ONE Free Edition
http://www.veeam.com/downloads/
For Specs(Commercial Product) check this URL http://www.veeam.com/vmware-esx-monitoring.html?ad=menu
Veeam ONE free does not support SMART hard disk monitoring.